Well, I bought a used JWT/MSD 50lbs/Cobra MAF from gwong on the board here, and everything looked to be in perfect condition. I know he was running 8.5:1 compression, and I am running stock compression but he didn't think the JWT ECU was programmed for the 8.5:1 compression. I installed the F-Max kit with the fuel system about 2 weeks ago, and blew ALL FOUR ringlands after 4 days of boosting at 7psi. I dynoed the car the night it blew at 224RWHP, but the wideband O2 at the shop was out of service at the time.
So out comes the motor, in goes a nice clean motor out of a '97 with 36k miles. I decided to run this motor N/A until I confirmed that the engine was in good condition. So now the engine is running N/A with the JWT turbo 50lbs/cobra program N/A. With the cobra maf, and MSD injectors of course.
Long story short it dynoed at 150RWHP N/A last night, but the A/F ratio is jacked... it got up to 14.5:1!!!!
Anyone know if this is something to do with running the ECU N/A? It shouldn't really have anything to do with it
Any info would be greatly appreciated. Unfortunately I didn't print the dyno sheet... but I might be able to put it up in the next couple of days.
BTW this is using the stock FPR on the JWT fuel rail. Do I need to bump up the fuel pressure ?
-jeff