Neo, my car, is showing me the SERVICE ENGINE SOON light. With only 8700miles I get this light :tumbleweed: Any ideas? Thank you in advance

The only turbo mods I am aware of on the car are a blow off valve but it could be tuned of have MBC because it came with a boost gauge that peaks 25psi and has a vaccuum of -20 my problem is when I pin the throttle the turbo will spool up then at 6000rpm it will skip the car will shift hard with...

like it says, put a grimmspeed manual boost controler on the wastegate and the boost source coming off the pipe in the very very back. took the t out and put cut the boost source hose and put the t in to like normal. everything was fine. didn't even raise boost since i have no boost gauge. then...

Its been 4 days since i installed my Agency power cat back exhaust, and my service engine soon light came on today. I know that when you replace the cat (with test pipe or down pipe ect.) that the light can come on for a number of reasons. but i did not touch my cat and im alittle worried. Any...

So I picked my car up from the shop and my guy mentioned that when he took the car for a quick test run it wasn't responding properly in high RPM's. I took it for a spin and put the pedal down in 4 gear and at about 4K RPM's the car sounded like it was blowing through the exhaust and the ASC...