I've pushed the limits of the NA ECU.
Posted: Sat Apr 30, 2005 8:58 am
7-9 psi and a 50 shot of nitrous does work. Once, maybe twice, then the ECU throws a fit and no more do we go fast.
My first run was the best I have ever run, a 14.76 @ 92 (although I expected MUCH better). This was with a 2.062 0-60 but I missed a shift and took my time through the other two shifts. So I could have claimed as low as a 14.5 probably.
The next run felt faster but I had a .2 slower 60' time so I only pulled a 14.9 but trapped at 93.
The next two runs were up against an auto turbo legacy! I was totally gonna smoke him and even told him I wouldnt use the happy gas. Instead I pulled a 16.4 and a 16.1. I even suffered some extreme knock on the top of third on one of the runs. The last time I was at the track just running 7 psi I was getting consistant 15.4s with two 15.2 runs so something was obviously wrong.
The ecu was now extremely unhappy and I was having trouble idling. The rest of the night got no better but I also quit running the 60 shot of nitrous but I never broke into the 15's again.
Everytime I cleared/reset the ecu the idle would come back to normal but since I was running hot the CEL would pop back up real quick and the wagon wouldnt run so swell.
Since I have rebuilt the engine back in Sept(?) I have suffered alot of knock so I know I have some piston/ring land damage so I suspect I have some compression issues. How much is another question.
So now the question is not just "Who wants to buy me a clutch?" but also "Who wants to buy me some engine management?"
The auto turbo legacy was pushing 10psi steady with a boost controller of some kind and was getting consistant 15.9-16.2 times at 86-87 mph. His top end would really come on nicely.
My first run was the best I have ever run, a 14.76 @ 92 (although I expected MUCH better). This was with a 2.062 0-60 but I missed a shift and took my time through the other two shifts. So I could have claimed as low as a 14.5 probably.
The next run felt faster but I had a .2 slower 60' time so I only pulled a 14.9 but trapped at 93.
The next two runs were up against an auto turbo legacy! I was totally gonna smoke him and even told him I wouldnt use the happy gas. Instead I pulled a 16.4 and a 16.1. I even suffered some extreme knock on the top of third on one of the runs. The last time I was at the track just running 7 psi I was getting consistant 15.4s with two 15.2 runs so something was obviously wrong.
The ecu was now extremely unhappy and I was having trouble idling. The rest of the night got no better but I also quit running the 60 shot of nitrous but I never broke into the 15's again.
Everytime I cleared/reset the ecu the idle would come back to normal but since I was running hot the CEL would pop back up real quick and the wagon wouldnt run so swell.
Since I have rebuilt the engine back in Sept(?) I have suffered alot of knock so I know I have some piston/ring land damage so I suspect I have some compression issues. How much is another question.
So now the question is not just "Who wants to buy me a clutch?" but also "Who wants to buy me some engine management?"
The auto turbo legacy was pushing 10psi steady with a boost controller of some kind and was getting consistant 15.9-16.2 times at 86-87 mph. His top end would really come on nicely.