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| cameron.kanofski |
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Age: 33 Posts: 25 Joined: 4th Apr 2012 Ride: AUI Fairmont Ghia 5.0L V8 Location: Toowoomba |
Hey guys,
I've recently put a 4.0L EFI EL motor in my street sedan and in it's last race it was EXTREMELY lacking in power. It idles perfectly but when I put the foot down it gives a good burst of power, then starts coughing and spluttering and loses power. I've narrowed the problem down to fuel delivery but if anyone has any suggestions or an EF-EL workshop manual that I can download I would greatly appreciate it. Also, the motor has a stage 3 cam, bored 40thou, head shaved 20thou, after market chip, standalone electric fuel pump and a hotdog exhaust. Thanks |
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| Greenmachine |
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There's E series as well as AU series manuals (pdf) you can find online - they're not real good but might give some info. I don't think proper workshop manuals are available for free anywhere.
Have you tried it without the "chip"? What sort is it? - ie. Chiptorque, Fuelchip etc.
_________________ Sold the Greenmachine - now driving 2015 Jeep Cherokee Trailhawk. |
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| cameron.kanofski |
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Age: 33 Posts: 25 Joined: 4th Apr 2012 Ride: AUI Fairmont Ghia 5.0L V8 Location: Toowoomba |
Greenmachine wrote: There's E series as well as AU series manuals (pdf) you can find online - they're not real good but might give some info. I don't think proper workshop manuals are available for free anywhere. Have you tried it without the "chip"? What sort is it? - ie. Chiptorque, Fuelchip etc. I'm not sure what sort of chip it was. the mechanic that did the work for us organised one through the auto electrician he uses and, being in his late 70s, didn't know too much about the chip itself. I have been looking in to downloading a program to change the chip settings. Assuming I could use the program right, could this help? |
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| ranga83 |
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you would first need to know what chip it is, then you would need the programmer for that chip and the program that you need to tune it.
_________________ ef futura, pacemakers, 2.5inch catback, k&n panel filter and 3.45 lsd. extractors/cat, ticky head, custom cam grind, t5. now onto cosmetics. |
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| Greenmachine |
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If you go have a look at the T.I. Performance website you'll get a handle on how the ECU is "Chipped" and what's involved in changing the program. In short there is no way of just plugging a laptop into the ECU and altering the tune.
It's worth trying it without the chip - rather than removing the chip you might be best getting another secondhand ECU the same part number. The engine should run more or less ok without being "chipped" - tho idle might be fairly evil - and you can establish whether the issue is simply with the "chip" or something else in the system. In saying all this, one thing that occurs to me is your fuel system has evidently been messed with... - so have you made sure the fuel lines are the right way round - ie. fuel px from the pump goes into the rail and fuel line from the bottom of the regulator is RETURN - ie. people often make mistake of thinking pressure has to go TO the bottom of the regulator - that's wrong as the regulator regulates pressure UPSTREAM of itself.
_________________ Sold the Greenmachine - now driving 2015 Jeep Cherokee Trailhawk. |
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| phongus |
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Check your fuel filter, sounds like it is starving for fuel and under heavy load, the rail is not pressurised to required levels. Also a severely blocked air intake can cause issues as well as a blocked exhaust system...collapsed cat or muffler.
It could be the chip...would the car run without the chip?
_________________ phongus = Post whore 2006 |
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| bry40l |
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The chip would be disableing the smart lock.
Is the vacume line plugged on to the fuel pressure regulator? Is the regulator possibly buggered
_________________ BF XR6 |
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| cameron.kanofski |
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Age: 33 Posts: 25 Joined: 4th Apr 2012 Ride: AUI Fairmont Ghia 5.0L V8 Location: Toowoomba |
We've only run 2 race meets with this setup. I'm guessing the motor would still be tight but it shouldn't be dying the way it is. The pump, filter and regulator were all replaced when the motor was done.
At a guess I would say the chip is a J3, simply because I can't find any other aftermarket chip for E-series computers. I have looked in to T.I performance and I am think about getting a programmer off them and using my friends computer who already has a tuning program to try reprogramming. I'll check all the vacuum and fuel lines this weekend as I'm away all this week and our next race isn't until March 9. Would getting a new set of injectors be another good place to start? |
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| ranga83 |
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you still need to know what brand of chip. it is called a j3 chip because it goes onto the j3 port on the ecu. moates do a chip as well as chiptorque and t.i. performance. t.i's programmer will only work on t.i's chips same as the moates gear i think.
_________________ ef futura, pacemakers, 2.5inch catback, k&n panel filter and 3.45 lsd. extractors/cat, ticky head, custom cam grind, t5. now onto cosmetics. |
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| cameron.kanofski |
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Age: 33 Posts: 25 Joined: 4th Apr 2012 Ride: AUI Fairmont Ghia 5.0L V8 Location: Toowoomba |
Decided to get a whole new chip. Going with a T.I Performance chip and might look in to getting all the gear we need to tune it at home after a few runs. The motor was putting out 150hp fresh from getting new pistons and cam, with the wrong chip. Can anybody give me an estimate on how much power this motor will eventually make with the new chip and after it loosens up a bit more?
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| ranga83 |
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how long is a piece of string? what mods? what cam? gearbox?
_________________ ef futura, pacemakers, 2.5inch catback, k&n panel filter and 3.45 lsd. extractors/cat, ticky head, custom cam grind, t5. now onto cosmetics. |
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| cameron.kanofski |
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Age: 33 Posts: 25 Joined: 4th Apr 2012 Ride: AUI Fairmont Ghia 5.0L V8 Location: Toowoomba |
ranga83 wrote: how long is a piece of string? what mods? what cam? gearbox? Cylinders bored 40thou, head shaved 20thou, stage 3 Crow Cams cam, pod filter, 5 speed manual gearbox. |
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| ranga83 |
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someone else will have to answer that, i dont know the specs of that cam
_________________ ef futura, pacemakers, 2.5inch catback, k&n panel filter and 3.45 lsd. extractors/cat, ticky head, custom cam grind, t5. now onto cosmetics. |
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| ranga83 |
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im assuming thats 150hp at the wheels? if so it seems a bit low.
_________________ ef futura, pacemakers, 2.5inch catback, k&n panel filter and 3.45 lsd. extractors/cat, ticky head, custom cam grind, t5. now onto cosmetics. |
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| SWC |
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ranga83 wrote: im assuming thats 150hp at the wheels? if so it seems a bit low. That is approx 113RwKw. That is s**t. I have seen 400,000km stock engines put out higher than that. They are a 150+FwKw engine fresh from the Factory and allowing for 25% loss at the drivetrain is what you have 113RwKw. |
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