so i got a 99 cavalier with 2200 sfi. It is turbocharged and intercooled. i am running around 6 pounds of boost at the moment. The car was working perfect. I used the check valve to trick the map sensor, seemed to be working great, put the engine light off, had my fuel pump installed, and everything was going good, than today i gave her a shot and it pulled good than backfired and sputtered and wouldnt take the boost so i let off er a bit, than the engine light came on, and ets light. but when i hit around 100 km/h itll take it fine and pull great. i hav no access to a scanner for a couple weeks till school starts back up, juss wonderin if anyone might no as to why it might of all a sudden started this? thanks.

less gap on the spark plugs.



Are you scared of the changes coming? The answer is on the inside.

Could be soo many things. Without a scanner start by pulling the plugs and checking them out.



FU Tuning