I have a '14 VQ37 currently set up with a Rev9 Axleback "muffler delete". I'd like it a bit louder, and instead of doing a full resonator delete (gross!) I was thinking of replacing the stock resonators with Flowmaster FlowFX. Was wondering if anyone has a similar setup, or can point me in a...

I want to get my car exhaust system done But do i need to buy test pipes or could i keep it stock? here is the setup i bought (flowmaster, res, borla xs muffler dual & then 2.5 exhaust tips) I took the speed culture route! Haha.. but anyways do i need a test pipe? i have a 2014 awd premium