Originally posted by beyondloadedSE:
Dyno your car before you get your exhaust done and then once you the flowmasters installed, dyno it again and then tell him you want a free exhaust for not gaining the 30+ hp like he said you would.



Word, plus the dyno will be useful later if you ever chip your ride.

I wonder how much a mandrel bent SS system would achieve (in hp) if a crush bent system achieves 7

Never had my car dynoed yet