Thread: PUlled down.Take a peak at scans please

Your knocking up to 2*, also are you running a rear o2 sensor or sim? There is a cat diagnostic test (occurs on 01+) that makes you go +16.4 ...

However, I would get that exhaust fixed and see it your still 16.4... I think you need to address that before dropping pulley sizes.

02 is Hooked up andin exhaust. Just doesnt have a cat.The PCM was a ZZP tuned pcm. I think they set the code to non report.Ive just made Maf changes and Timing changes as Ive added mods and dropped pullies I need to check with my HP tuner when I get it back from a friend I let borrow it. The 16.4 fuel trims didnt start untill my car tossed a p1133 code. I have leaks at the crossover front manifold and rear collector. so I assume thats why.