Rep Power: 0

wussup... just installed kamikaze header and a custom downpipe and the car is running like shizt... the check engine light is on, i smell oil or sumthing burning very little though... do yall think it's my o2 sensor on the downpipe that's not reading right??? if so if i install an o2 simulator will it solve the problem..... I also have all this connected to a greddy evo catback...
and help will be appreciated.