danegerous

iTrader: (10)

Thanks for looking, and I hope this doesn't make anyones head explode. Basically, I'm having some random RPM misfiring, both low end and high end. Typically 1-3k and about 6-8.5k you can feel a lot of break up and power loss. The car is an S5 NA with an S5 TII power plant swapped in. I ran the car for 2 years with no problems with all N370 components except I used an N353 Ecu. Now I have an N370 Ecu so everything is US Spec S5 TII and we have the break up issue. My check engine light doesn't work or come on at all so I can't pull any codes, I figure taking it to Neptune Speed would be a good idea because they have the RXDOCK Factory tester guy. Modifications are all very simple, intake, exhaust, ported waste gate, and a blitz bov. My best guess is that running it with the NA Ecu has messed with the timing and possibly the TPS settings. I can't say for sure but what I think needs to happen is the engine needs to be retimed with the N370 Ecu, and the TPS may need adjustment. None of this stuff I'm handy enough to do myself but I would still appreciate any input on the matter. I plan on taking the beast up to Neptune Speed sometime next month but hey who knows maybe I can fix it myself