
06-27-2018, 10:32 PM
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CC Member
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Join Date: Jan 2002
Location: Northridge,
CA
Cobra Make, Engine: Arntz Cobra
Posts: 1,839
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Not Ranked
I have been making a lot of changes to my system after running the Targa California rally. During the 4 day event, my engine ran progressively worse. I tried everything I could think of with the EFI tuning and got it running OK at low speed. But any major power request was rewarded with spits and barks out the exhausts. While testing the car at home, the system got so bad I had to limp home.
After getting very frustrated and removing all the changes I had made, I finally started looking at my EDIS ignition system. I had a spare EDIS-8 module and switched it out. All the problems were solved! The EDIS module and system has been running great in my car for 4 years. Evidently, the hot weather during the rally and it's proximity to the upper radiator hose pushed it too far. I have protected the new unit with a couple of layers of heat protection and hope this never happens again.
There were also some issues with the throttle cable sticking. I decided to try to improve the leverage by making a small bracket that moved the throttle stud about 3/8" farther above the primary butterfly shaft. I also had to give the accelerator pedal about 1/2" more travel, too. Wow, this really made a difference! The engine is so much more controllable now. I don't think I will bother with the progressive link again.
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Last edited by RallySnake; 06-27-2018 at 10:36 PM..
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