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1,203 Posts
I think im like a lot of GT owners out there in the sense that their 1st mod is always exhaust. When I got my GT I couldnt wait to get her screamin loud. Since then Ive added an o/r x pipe with slp straight through mufflers, dumped. So Im pretty much runnin open exhaust. I was wondering if that could harm my engine in any way. I havent had it that way for that long but its been eating away at me and i cant seem to get a good answer from anyone. im gonna be getting an xcal3 with a custom tune and i was curious if that would correct it, if its bad for the motor.