okay nah it aint bin tuned yet and yea i kno i need to do that...it got cel cause vtec aint wired and o2 aint connectd that as far as i kno why cel is on...i was runnin it for a month with no problems...i started with a chipped gsr ecu and then switchd to a chipped ls and it ran better...i did a oil change and thats when it fucked up rite after it backfired in 4th...