Fitech No Rpm Signal

We will be covering basic four stroke theory as well as component identification. On the more expensive units you can lock out the dizzy. My mechanic is suggesting that I run the green wire from the 8394 to the ECU and the actual tach from the coil so I am not splitting the tach signal and potentially introducing noise into the system. Stoff - I've thought about the same thing with FiTech, and the short answer is that their self-learning parameters are based on the airflow through their throttle body so everything would change when you ditched it. selection, display update rate, tach signal type, and rpm warning point can be adjusted in the setup menu under “TACH”. As long as those 2 series gears are in there, your car will remain sluggish no matter with carb, or EFI. The Sniper uses a "coil driver module" that does not come with the kit and adds $99 to the cost, where this is built into the FiTech. RACELOGIC Traction Control Manual V3. The RPM input is one of the most important sensors and hooks directly to your ignition box output, or there is a signal converter for HEI-equipped vehicles included with the kit. Have not heard back, so I decided to ask here. The EZ EFI does have a safe mode if there are check engine light problems, but not for the RPM - without this source it will not run at all. In addition, FAST offers a TBI system that uses a single throttle body with eight injectors that is capable of 1,200 hp. -signal-kits/efi-24x. 5 Exhaust and Flowmaster mufflers. The WHITE wire of the TPS is the actual signal. Your fitech would also be set to VRCOIL instead of TACH. It has started twice at home with no issue, so the P0335 is my favorite kind of problem, intermittent! Here is part of the mod:. To confirm, you could run your vehicle through an emissions test. I then moved the fitech wires to the little valley between the passenger valve cover and the intake and ran the tach wire under the spark plugs and around the distributor to the connection. It's out-of-the-box compatible with everything from a 200 horsepower, small cubic inch factory original motor all the way to a brand new 350 HO crate motor. They said that a bad plug wire could cause it so I replaced my plug wires and spark plugs with the radio suppression type made for running on the street and still have no tach signal. When at a full stop the RPM gauge idles about 800 rpm but then all of the sudden it drops to less then 500 rpm but regains its rpm. If you go to Autozone now, and enter the coupon, it's $1,600. Tried a different distributor and the issue was gone. Using the coil neg is a method to pull the tach signal for both of our setups. With the help of Ken, Jeremy and Bryce at FiTech we determined my new Billet ready to run distributor was sending bad rpm signals to the EFI ecm. The FAST installation manual says another source for RPM signal is the negative side of the ignition coil in a traditional dwell controlled inductive ignition system. I have not connected the tach output of CDI to FiTech ECU;, so there is no rpm signal for injectors. The FiTech is the same as the Sniper. When I first start her up, the idle will "hunt" up and down +/-50 RPM or so, until the water temp rises above roughly 60F or the engine has been running for a few minutes at which point it smooths out. You need to apply a 5 volt signal here in order to control the timing while running. It's out-of-the-box compatible with everything from a 200 horsepower, small cubic inch factory original motor all the way up to a 600 HP engine build. Has anyone heard of the FiTech PAC EFI unit? EdM that the JM6606 should be a good option No vacuum advance, but you don't need it when controlling the timing via. The Fitech adapts to the engine and your driving with some basic info about the engine. Order a FiTech Classic Gold Finish Go EFI Classic Self-Tuning Master Kit w/ External ECU for your 4bbl Intake Manifold from CJ Pony Parts! This kit is a ready-to-run system that steers away from the programmable features and sticks to the basic functions. This means that if you have to consider using a 4150-style carb it is at the upper limit of airflow for the carb design. If there is no rpm signal - the unit will not deliver fuel. When cold older EFI system like these are basically a carburetor, everything has a fixed relationship with no variables. (has run twice tho) comes up with p0335 rpm noise. IKEA is here to help you create the dorm room of your dreams with furniture, room decor, bedding, dinnerware, and all the essentials of the college experience. Closed loop is using the O2 sensor input signal to react rapidly to the changing conditions and make fuel trims to match the desired air/fuel mixture. Find FiTech Go EFI 4 600 HP Self-Tuning Fuel Injection Systems 30002 and get Free Shipping on Orders Over $99 at Summit Racing! When it comes to fuel injection versus carburetors, new school is just too cool. It's out-of-the-box compatible with everything from a 200 horsepower, small cubic inch factory original motor all the way up to a 600 HP engine build. FiTech FH30008 Meanstreet EFI 800 HP Fuel Injection System - FiTech A hand-held controller features a touch screen for quick and easy initial set-up. On HEI distributors, this connection is made to the "Tach" terminal that is in-dicated on the HEI distributor cap. They offer engine management systems for both EFI and carbureted engines (carbureted LS engines are available from Chevrolet Performance as crate or carb-converted Gen III/IV engines). The rpm signal is crucial to EFI system performance, so Holley requires the rpm signal wire be routed away from "noisy" sources, such as power, coil, and sparkplug wires. This feature is embedded in the FItech (not documented). You will find that after moving the timing past MBT the torque will plateau and no longer change. -A RPM Signal Now i did the exact same thing 04SilveradoMykk did in his thread with his Vortec PCM, But my truck was stuck in limp home mode. About 500 miles round trip. All of them run HEI as that is a requirement for the tach signal for the setups. They worked ok, but were really awkward to use and navigate the system. This feature is not available right now. With the Edelbrock intake, we simply made plugs that blocked off the injector bungs. Once you have chosen your desired RPM, push the RPM set button in the center of the keypad again. Slowly depress the throttle pedal to wide open. A couple of days ago I began having problems with my FiTech FI. Find Holley Terminator X GM LS Standalone ECU & Wire Harness 550-905 - 58x/EV6 at LSXceleration with Free shipping on qualifying orders!. Problem 4, I have no fuel pressure. 70% smaller with 30% more spark energy. but no luck. CompCam(306), Mac Headers (mid length), BBK 52 mm Throttle Body, Ram Air Power Hood, Accel 26 lb injectors, Aeromotive adjustable Fuel pressure regulator, Holley high pressure fuel pump, 2 chamber Flowmaster, 373's and a custom dyno tune. No luck so far. This engine makes 330HPat 5800 RPM and 330 lb ft Torque at 4500 RPM. 6 3V (2006 GT ) if so where did you hook up the signal wire ? I used the common(red) on the #1 cylinder coil but doesn't work , I have power and can set shift point but see no rpm on display. It was up to the operating coolant temp of 160 degrees, then it just died/quit. It's also nice having the fan control and associated stepped idle speed as I have a Lincoln Mark VIII fan installed as well. Like all Chevrolet Performance Small-Block crate engines, it’s built with a cast-iron block. Crank the engine while watching the controller. The signal needs to be a 0-5V type signal (typically around 1 volt. Symptoms -. Bottom line this is the way to go. The proper air/fuel mixture can be determined with a tailpipe sniffer that. While I was in there, I replaced the rotor since it had a slight arc residue on top of the rotor. One is the 40003 Fuel Command. 70% smaller with 30% more spark energy. After the signal has been filtered and rectified, it is then conditioned before it exits the end of the filter circuit to the new output. the Edelbrock sump works the same as the fitech fuel system. The problem going too much in one direction mechanically then trying to adjust it electronically would be the arcing issue where you could ignite the wrong cylinder or you are just too far away to get a spark at all. Issue 2: erratic spike in RPM causing RPM noise fault code on FiTech hand held Saturday: Figured I replace the Pertronix coil with an old yellow top coil to see if it fixes the RPM spike. I have rpm signal on the handheld, but best as I can test I have no coil trigger signal. It's out-of-the-box compatible with everything from a 200 horsepower, small cubic inch factory original motor all the way to a brand new 350 HO crate motor. Remember that with EFI, the microsecond the throttle linkage moves, AFR is affected and altered by the computer's TPS signal. This includes inputs such as engine displacement, number of cylinders, cam duration, fuel pump type (pulse width modulated with no regulator, pulse width modulated with regulator or non-pulse width modulated with regulator), desired idle RPM and rev limit. 30001 About Go EFI Shown Go EFI Systems from FiTech are the most advanced, yet lowest cost, EFI systems available. I see no RPM, no injector pulse, no MAP reading and no timing advance. UNDER THE HOOD New 462ci (454ci 30 over) with FiTech EFI, Edelbrock RPM Airgap, new ceramic coated headers with 2. Some of the components shown above may look different from what will be included with your kit. The ignition noise fault was caused by connecting Fitech’s signal wire to the coil negative, even though this is what the instructions said to do. This page is intended for people who want to learn about the Ford EDIS (Electronic Distributorless Ignition System). Please, read the entire article before modifying your carburetor so you have a full understanding of what needs to be done. I can hear the pump click when I turn the key but it doesn't sound like a prime, just a click so hopefully that's not fried now. As a result, the engine is never "under" or "over" carbureted at any engine rpm or load. California/Arizona truck until I drove it to Idaho a year ago. Any other ideas on how I can clean up the signal?. fuel injection system - compare prices at BuyCheapr. 5) Soldering a 10k Ohm resistor into the rpm signal wire (blue) about 10 inches from the Fitech ECU - apparently, this acts like a low pass filter when coupled with the capacitive qualities of the ECU itself (allegedly according to some of the Facebook fitech commentators). Even with this code it runs like a scalded cat, only making a slight hesitation sometime. How to Fix a Car That Stalls. On HEI distributors, this connection is made to the "Tach" terminal that is in-dicated on the HEI distributor cap. Holley just brought EFI within range - introducing Sniper EFI! It’s economically priced so you can have all the benefits of EFI and still have money to finish or upgrade the rest of your ride!. EDELBROCK E-STREET UNIVERSAL EFI SYSTEM ED3602 BASE SYSTEM WITH RETURN STYLE FUEL KITUpgrade your carburetor to modern fuel injection using one of these Edelbrock E-Street EFI systems. The FiTech Go EFI System is the industry's. I know Wallace18 has an FiTech so he is speaking from experience. Slowly depress the throttle pedal to wide open. FiTech Go Street EFI will provide lower idle rpm, cleaner start up and crisp throttle response - features the best carb tuners in the world can't match and only come with FiTech technology. Only four wiring connections are needed: battery power, ignition signal, RPM input, and the hand-held controller. I was going to get a command module but glad I didn't. The Chevy 7400 7. Press the RPM set button on the key pad. If for some reason it doesn't, first things first- make sure the MegaSquirt EMS is getting a TACH/RPM signal in the tuning software. and make sure I'm getting 12v to the trans. You should see a cranking rpm even if the engine doesn’t start. I might agree with you Tim, but the units are 'self tuning' and therefore dependent on a correct signal. Key specs at 6 V: 130 RPM (no-load), 21 oz-in (1. IAC steps were at 227 when I first looked. If your tachometer has no signal or an erratic signal (pointer jumping all over) you first need to verify that you have correct power, ground and signal connections. Without tach signal, the unit will not fire injectors during crank. The CD’s high-voltage signal was so noisy that it completely disrupted the rpm signal essential for the EFI to operate — which is why the engine would not start. I think the Crank sensor may be bad. This is obtained by a connection to the negative post on a 12V coil. Six-speed WS6 Pontiac is the product of a ’90s GM strike, a paint recall and pure dumb luck. A stock Bronco weighs 4200 GVW. Did you turn down the PWM Low setting in the Fuel Pump section of Pro Calibration on the controller? That should only effect idle, and everyone is setting it to 40. Elsewhere in this story we've listed the ratios of both the TH350 and the 700R4/4L60E. MSD developed a module to replace the stock HEI module in a stock HEI Distributor. This could point to a failing ignition module. Unbelievable prices on 2x Power! Shop an expansive selection of 2x power in stock right now online!. 06:1 First-gear ratio would appear to be an advantage over the TH350's 2. signal is not a steady square wave, an RPM adaptor (optional) is needed. With the help of Ken, Jeremy and Bryce at FiTech we determined my new Billet ready to run distributor was sending bad rpm signals to the EFI ecm. In addition, with no jets to change, no leaking power valves and no internal gaskets to swell, this high performance carburetor is relatively maintenance free. PSI sells affordable, in stock, full tech support, plug and play standalone wiring harnesses for lsx and lt1 swaps. I have rpm signal on the handheld, but best as I can test I have no coil trigger signal. In addition, FAST offers a TBI system that uses a single throttle body with eight injectors that is capable of 1,200 hp. There is a large group of enthusiasts who are happy with their ZZ4 crate engine or their ’66 Mustang’s factory engine, but still want the advantage that EFI has to deliver. Live and learn. There are many things that could cause a car to stall, with solutions ranging from simple to complex. * Sensor ground circuit for a poor connection at A/C pressure sensor. The FI performed great. You should get an RPM signal. That's really the only difference. When a car's Engine Control Unit (ECU) senses a problem or malfunctioning within the vehicle, it triggers an ECU fault code that will turn on the check engine light. I tried a tach filter I had laying around from my ez efi kit, it would start and die and no rpms on handheld while cranking so that did not work, I tried moveing the blue wire away from other wires and plug wires still get the fault code. Also when I put the truck into reverse or drive without my fo. So the result is the ECM is reacting to the signals it receives. This is where the confusion often originates. No codes were recorded so that meant no short cuts. Then as long as there is an RPM signal the fuel pump is energized. FiTech Fuel Injection TM Instruction Manual for the following Go EFI Systems 30001, 30002, 30004, 30012, 30061, 30062 & 30064 This Quick Start Manual is designed to get you up and running with the Go EFI System Base Kit and either the 40003 Fuel Command Center or the 40005 Inline Fuel De - livery Kit. The circuit is built around frequency-to-voltage converter LM2917N-8 (IC1), bar display drivers LM3914 (IC2 and IC3), 20 LEDs (LED1 through LED20) and some other components. Press the up arrow until the red pointer indi-cates the RPM at which you would like the shift light to illuminate. The system MUST BE TURNED OFF AFTER MAKING THIS CHANGE - special settings are set up at the software initialization, and it will not work without this complete power off to power on cycle. com and buy online now. one of the gm techs that worked on it is a friend of mine, and he stated that every test he performed, all diagnosis charts he followed, as well as when he called into the gm techline, all pointed towards ecm failure, thus the second ecm. The FiTech Go EFI System is the industry's. Will it affect my ignition: No, it can't. Its RPM, so if it's off a couple ticks per min shouldn't matter too much. No Yes Please check all of the items on that list before continuing. A malfunctioning IAT sensor may cause your vehicle to take longer to start on cold mornings. If using Fitech with spark control, one should use the BLACK wire with the white wire from MSD box. Fitech states because the ballast resistor is dropping down the voltage to the coil and is interfering with the rpm signal to the Fitech. This engine makes 330HPat 5800 RPM and 330 lb ft Torque at 4500 RPM. After, a visual inspection will be done of the crankshaft position sensor and its wiring. If the FiTech is a throttle body with the injectors included shaped like a carb I would use an Edlebrock RPM airgap dual plane. TPS (Throttle Position Sensor) - Should read 0. 060 over with TRW pistons,federal mogul bearings true roller timing set, edelbrock matched cam package,edelbrock performer intake, a 750 holley carb, and summit headers Power Windows AM/FM Air Conditioning. As far as I know there is no such distributor for our engines. This blowback means there isn't a good vacuum signal to work with at the fuel pressure regulator anymore, and the regulator will need to be replaced. When I put it in park the idle RPM was 2100-2200 each. With ported vacuum to the advance unit it's not such a big deal, because you have close to no vacuum signal at idle so not such a big jump in RPM, you can just leave it at whatever idle setting you used to set the timing. Using the coil neg is a method to pull the tach signal for both of our setups. Do another datalog to see if it sends any signal, there is a PID to do it. I see no RPM, no injector pulse, no MAP reading and no timing advance. No joke! Throttle. Open loop means NO fuel trimming is occurring based on the O2 sensor signal. at 7200 GVW. Trigger Tach Signal:The FiTech EFI requires an rpm/trig-ger reference to operate. Only when it reaches the threshold speed, does the computer take over timing. The engine would idle perfectly, but as soon as you put your foot on the gas pedal, the revs would drop from 800 to about 500 rpm, then slowly build back up then from 1000 rpm everything would be fine. I ran a tee in the vent line on my spare tank filler neck to vent the sump and have had no issues. Low frequencies are passed through to the tachometer, but high frequencies are sent to ground. With the Edelbrock intake, we simply made plugs that blocked off the injector bungs. All that is left is the serial cable plug for the display, the display power connection, and a wire to a 12 volt switched source that will turn the ECU on. The complaints centred on driveability problems - unstable low engine rpm, stalling, rough idle, no initial power, hard starting. Whether you need 4L80E wiring diagram information, 4L80E transmission rebuilders tips, 4L80E technical information, 4L80E diagnostics, 4L80E troubleshooting help, or just answers to your 4L80E transmission rebuilders question, the Transmission Rebuilders Network is the place to go!. shortly there after, (next day. I use the rail pumps and custom gas tanks on my setups. You should get an RPM signal. RPM of a vehicle is directly proportional to the rate of its ignition pulses. Rough Low Idle and Engine Shakes, Hesitation and Lack of Power at higher rpm while cruising. For a low-rpm engine it won't matter. I primed it 3 to 4 times and still no fuel so unless the FITech is the reason my fuel pump isn't doing what it's supposed to it's junk now. This will move engine rpm up on the power curve. I primed it 3 to 4 times and still no fuel so unless the FITech is the reason my fuel pump isn't doing what it's supposed to it's junk now. If everything else is in order, failure in this test should be because of a faulty coolant temperature sensor. (has run twice tho) comes up with p0335 rpm noise. It should read between 85% and 100% at wide open throttle. I did some searching over at HP Tuners website and discovered that the clutch switch signal needs to be active. It must have a timer built in to know how many revolutions per minute. Any experience with FiTech throttle body injection? (Pace Performance) The tach signal will be very strong and I won't have any issues with the stock Distributor. If there is no rpm signal - the unit will not deliver fuel. This is the point of MBT. The circuit is built around frequency-to-voltage converter LM2917N-8 (IC1), bar display drivers LM3914 (IC2 and IC3), 20 LEDs (LED1 through LED20) and some other components. RPM is the 1 input that a speed density system MUST HAVE in order to run. No matter of rpm. The noise is present with the radio on or off, it disappears at about 1900 rpm. New ignition switch and glove box lock. Best Fitech prices online | Fitech for sale with amazing discounts from top websites | Check out the best deals today by MSN. The RPM input is one of the most important sensors and hooks directly to your ignition box output, or there is a signal converter for HEI-equipped vehicles included with the kit. They also can be used in stock applications. 30001 About Go EFI Shown Go EFI Systems from FiTech are the most advanced, yet lowest cost, EFI systems available. The WHITE wire of the TPS is the actual signal. Can someone take a pic of the location of the factory tach wire? To the best of my knowledge it is brown? I need the location of the wire in the engine bay , so I can find mine and hook it up. While I was in there, I replaced the rotor since it had a slight arc residue on top of the rotor. They said that a bad plug wire could cause it so I replaced my plug wires and spark plugs with the radio suppression type made for running on the street and still have no tach signal. No “leak down” should occur with discharge ball in place. On this naturally aspirated motor we want it between 12. On HEI distributors, this connection is made to the "Tach" terminal that is in - dicated on the HEI distributor cap. Another telltale sign of your coolant temperature sensor not functioning properly is if your engine is overheating frequently. I am swapping out a LS1 motor in my 2002 Camaro Z-28 for a LS376/525 GM crate engine. No need for that as one of them goes to coil (positive) which just happens to be the Orange Coil/EFI labeled wire. • Connect the blue cable labelled "RPM form" to the cable labelled "RPM" of. what could be the cause of this and is it terribly expensive to …. If you're doing a similar install to this (GM HEI8 dizzy), you've got good parts, and you've got things wired up as above it's going to start. They worked ok, but were really awkward to use and navigate the system. mine is doing the same thing! My wife took it to auto zone and they told her it was the mafs. Hi, I'm running a FiTech 600 hp Power adder and MSD 6A on a 308 in a UC hatch. To make this system work you need to drop another 1K+ into their special ignition system. I didn't use their fuel command surge tank thing, I built a fuel system for it with a Walbro 225lph pump mounted back by the tank and ran 3/8 steel hard line with An fittings. 9:1 AFR at the low end of the WOT dyno pulls, and between 13. This is the point of MBT. I then connected the dizzy pick up output to the MSD CDI input and reconnected the 4 wire FiTech connector with CDI white wire lifted. To connect the filter, follow this procedure. Fuel mixture, rpm, exhaust-gas temperature, and more, are an indication of what the engine is doing as it operates. About 500 miles round trip. Can someone take a pic of the location of the factory tach wire? To the best of my knowledge it is brown? I need the location of the wire in the engine bay , so I can find mine and hook it up. If for some reason it doesn’t, first things first– make sure the MegaSquirt EMS is getting a TACH/RPM signal in the tuning software. Hi to all i,m having a problem here with a speeduino v0. The resister isolates the ignition system from any effect. MSD developed a module to replace the stock HEI module in a stock HEI Distributor. The engine should fire and come to an idle. org members. Obviously, to accomplish this, the ECU must see this signal before the intended time of the spark event. One is the 40003 Fuel Command. I bought the Power Adder version to work with my 100hp Nitrous kit, but I have not used it with the nitrous yet. If you're doing a similar install to this (GM HEI8 dizzy), you've got good parts, and you've got things wired up as above it's going to start. The noise is present with the radio on or off, it disappears at about 1900 rpm. FiTech Go Street EFI will provide lower idle rpm, cleaner start up and crisp throttle response - features the best carb tuners in the world can't match and only come with FiTech technology. I think the Crank sensor may be bad. They feature an all-new universal throttle body that's ideal for any V8 engine originally equipped with a carburetor and intake manifold with a square-bore, 4150. com and buy online now. Once the BCU senses zero rpm engine speed (no MPU AC signal) it then releases the latch, which holds the circuit power on. I set the zero to 650 rpm to 16 degrees so cranking rpm timing is optimal (no more hard starting). I'm am going to check all sensors (tps,map,Cts, rpm, ). But what I have found through all my testing and checking is I have an RPM signal all the way up to where the wire. I drove it a bunch more yesterday afternoon/evening and the same thing happened several times. Removed electric fan controller (Included in FItech). Same thing happens with injectors that don't flow enough fuel. At the display for heart rate (HR) a heart symbol is lit which means that the meter is trying to find a pulse signal from an external source, chestbelt with electrodes, Art. On the more expensive units you can lock out the dizzy. As long as those 2 series gears are in there, your car will remain sluggish no matter with carb, or EFI. It will supply the EZ-EFI with an RPM signal, and also drive the coils. 0:1 compression ratio. I tried a tach filter I had laying around from my ez efi kit, it would start and die and no rpms on handheld while cranking so that did not work, I tried moveing the blue wire away from other wires and plug wires still get the fault code. New wiring harness throughout. The Quick 4 controller makes your 4L60E, 4L80E, 4R70W, E4OD, or 4R100 transmission work in a wide variety of vehicles, including ones not originally equipped with electronic control. " FiTech says that it is radio interference of some sort. Engines with larger camshafts can cause a decrease in vacuum signal that can cause issues with vacuum advance distributors. Under normal running, the signal is exactly reproduced firing the fuel injectors as normal. I have a 94 ford Taurus SHO and while I'm driving my rpm gauge jumps all over the place, when I'm stopped it drops down so low it seems as my car will die. If you’re doing a similar install to this (GM HEI8 dizzy), you’ve got good parts, and you’ve got things wired up as above it’s going to start. Verify the gauge has 12V power. I think it relates to the pump overheating. This is obtained by a connection to the negative post on a 12V coil. TFI Ignition Control with MegaSquirt-II. But you need more than 239 inches and 100 horses to go 300. The car was maroon in color from the factory. Sent from my iPhone using Tapatalk. This includes inputs such as engine displacement, number of cylinders, cam duration, fuel pump type (pulse width modulated with no regulator, pulse width modulated with regulator or non-pulse width modulated with regulator), desired idle RPM and rev limit. Hey folks, My 2005 has 97K miles on it now. They also can be used in stock applications. it came from a car that we swapped a later TPI engine into, with an HEI, we got a later stock 70s tach to use with the HEI, and it worked fine. If you have no RPM signal then you need to check the wiring for it. After the signal has been filtered and rectified, it is then conditioned before it exits the end of the filter circuit to the new output. In the past, the SenDEC wire was tightly wrapped around the frame. Over the past 6 months I have had something weird going on. TPS (Throttle Position Sensor) – Should read 0. For this system, it's best to think of it as a self-tuning carb so you want to use the best intake for your specific engine build *AS IF* you were running carbs (ie a dual plane intake will likely be more streetable with better low end torque and a single plane will give you more power up top). Removed fuel pump controller (I had previously installed a fuel pump controller that was designed to disable the pump when no tach signal is detected). I received another call the other day from a customer who said I should set the record straight on some misleading information on the internet (can you believe that - misleading information on the internet?!) about dual plane intakes versus single plane intakes, especially in reference to our FI Airgap intake. A multitude of other applications may exist where an RPM signal needs to be corrected before it is fed to an aftermarket instrument such as a GlowShift Tachometer. FiTech offers two different fuel delivery options. Is there a. I am using the stock ECU from the LS1 2002 Camaro, with the 24-58 reluctor converter, injector adapters and needed sensor conversions, Texas speed and performance has done the basic tune. No – There is no power getting to the system. You will find that after moving the timing past MBT the torque will plateau and no longer change. At wide open throttle (WOT), manifold vacuum is at or near zero and the vacuum advance produces no additional ignition timing. I think the Crank sensor may be bad. If fuel is feeding from jet, check pump discharge ball for proper seating. All of them run HEI as that is a requirement for the tach signal for the setups. 96 Pontiac TA (6 speed). Third Generation F-Body Message Boards. For example, if you have a cam that's between stock size and 224 degrees intake duration, try an initial target idle speed of 800 RPM. I ran a tee in the vent line on my spare tank filler neck to vent the sump and have had no issues. It should read between 85% and 100% at wide open throttle. The MAP sensor tells the computer how much load is put on the engine at every RPM, including idle, to help the computer input the correct amount of fuel. 060 over with TRW pistons,federal mogul bearings true roller timing set, edelbrock matched cam package,edelbrock performer intake, a 750 holley carb, and summit headers Power Windows AM/FM Air Conditioning. Some EFI conversion kits also have the ability to control ignition timing. This is done by filling cavity above ball with fuel to level of casting. Its possible to do EFI with just Throttle Position Sensor and a RPM signal. But what I have found through all my testing and checking is I have an RPM signal all the way up to where the wire. FiTech EFI GO-SHIFT Electronic Transmission Control is in the same position as the ground wires for the EFI computer. FiTech recommends running this vent line back to the gas tank. Live and learn. I see no RPM, no injector pulse, no MAP reading and no timing advance. You need to apply a 5 volt signal here in order to control the timing while running. The problem going too much in one direction mechanically then trying to adjust it electronically would be the arcing issue where you could ignite the wrong cylinder or you are just too far away to get a spark at all. Power Adders. The engine WILL NOT start or run without an RPM signal. With ported vacuum to the advance unit it's not such a big deal, because you have close to no vacuum signal at idle so not such a big jump in RPM, you can just leave it at whatever idle setting you used to set the timing. If there is now an RPM signal, wiggle test the wiring harness to try and induce the fault. It is now a simple H configuration and other than the fun of doing exhaust work on the ground under the car, no real drama. Circuit and working Fig. Welcome to EFI Connection. No return line required, although it does require a vent line. I have a 94 ford Taurus SHO and while I'm driving my rpm gauge jumps all over the place, when I'm stopped it drops down so low it seems as my car will die. Tapping blue Tach signal wire on +12v battery terminal as suggested by FiTech. This is done by filling cavity above ball with fuel to level of casting. It's out-of-the-box compatible with everything from a 200 horsepower, small cubic inch factory original motor all the way to a brand new 350 HO crate motor. The wideband showed 12. New wiring harness throughout. INTRODUCTION. The way the system is currently wired, the tach signal is being split between the ECU and the tach. The other reason you want the 400hp system is that it has the ability to increase rpm's and turn on electric fans when you switch on the a/c system. IAC steps were at 227 when I first looked. With ported vacuum to the advance unit it's not such a big deal, because you have close to no vacuum signal at idle so not such a big jump in RPM, you can just leave it at whatever idle setting you used to set the timing. I keep losing tach signal to my Holley Terminator. ) 4, 6 or 8 cylinder Engine has a 4 barrel, 4150 style flange intake manifold* Unleaded fuel only Any RTV silicone sealants used on the engine are sensor safe * Any 4150 flange intake manifold will work. Everthing was well labeled and ready to go. My rpm in the datalogs are now smooth, no more spiking at constant throttle position and load. Trigger Tach Signal:The FiTech EFI requires an rpm/trig-ger reference to operate. An idle air control valve literally bypasses air around a closed throttle plate so the engine can get air at idle. + and - terminals.