vernvision
20+ Year Contributor
- 90
- 0
- Feb 24, 2003
-
Gardnerville,
Nevada
My car starts bucking and backfiring sending brown smoke out of my external dump pipe. When I hit about 4500rpm at half to WOT and under full boost that is when it starts running like crap, sputering and bucking. It started with a worn out stock engine and since then I have replaced everything. The engine (full blown race engine), turbo, all the sensors, hacked my MAS, SX fpr with a gauge set at 40psi, intercooler and all new pipes, MBR, EGT gauge boost gauge, ECU, A'PEX S-AFC, you name it I have replaced or added it! I have put almost $16,000 into this DSM piece of shit and it doesn't run any better than it did when I replaced the worn out old stock engine. One thing that did happen in the original engine is my O2 sensor wires right at the base of the sensor got fried some how and wrapped all around each other shorting out. I am thinking now it might be the MFI control unit or wire harness. I don't know it really pisses me off since this car should be pulling 11 seconds! I have had the car since it was brand new. Anyone that can help would me most appreciated.