Well after two weeks of searching its down to these two mufflers....
i have read great things about both ...the aero chamber has great sound the max flow boast to flow more freely than any other and has dyno 1.5hp over the aero chamber .....but what im mainly concerned about is MPG!!!
I sure hope someone on here has some helpful thoughts on which why to go because im stuck
Also what are some realistic MPG gains i can expect to see from changing out the stock muffler