Today I tried to get rubber when shifting into 2nd and instead of a tire squeel I got a very loud backfire. I had the RPM's up high but not near the red line and as soon as I shifted into 2nd is when it backfired. What could have caused this to happen? Should I be concerened as it is a stock '07 GT/CS?

Thanks[/align]

 

Sounds like you're running too lean