Just wondering if anyone has upgraded their exhaust system. I sold my 66GTO with headers and flowmasters for the screw and kinda miss the noise! BTW what is the airforce upgrade?

Thanks
Matt

 

My girlfriend just put a 3 chamber flowmaster on her 01 Supercrew 4x4. She wanted something that was a little louder than stock. IMO it sounds a little better, but not much. Too quiet for my taste. I'd say go with a 2 Chamber Flow or a straight through designed muffler with larger piping (3") or a turndown.