Re: I need help with exhaust.
I have a single flowmaster 40 series w/ a cutdown and it does create a lot of noise in cabin while cruising but it could be that the tip is right underneath my seat. Will be upgrading to true duals all the way to the back w/ a second flow. I'm very happy w/ flows 40 sounds good and not too much. Perfomance gains w/ one flow like the setup that I currently have I'd estimate to be 1.5 car lengths per 1/4 mile.
V6 Midnight Black
CAI w/ K&N Filter, Tokico Complete Suspension kit, Single Flowmaster w/ turndown, GT rear sway bar.