[Dewick911]

I got magnaflow and it's a 2.25 inch exhaust I was wondering if I got a custom exhaust say 2.50 be worth it or 3.0 for more air flow or should I just leave it ? V6 accord 6-6

 

[milan.mastracci]

If you wanted to get more performance out of the exhaust, don't worry so much about the size of the piping but look at the restrictions in the exhaust; pre-cat, cat, resonator, muffler. The car isn't pumping that much horsepower to need a 3" exhaust. If you eliminate the restrictions closest to the engine, you'll see the most noticeable of performance gains

 

[Dewick911]

Oh so like changing the muffler basically won't that change the tone more though

 

[milan.mastracci]

if you are looking at a simple change in noise change your muffler. If you want it louder, remove your resonator. If you want rasp, remove your second catalytic converter. If you want F**K TON of rasp, delete your pre-cat and your catalytic converter. A magnaflow muffler has built-in resonators so it will not be that loud on its own. If you are going to want a bit more noise with your magnaflow muffler, i would keep your cats and remove your resonator because your muffler has a built in resonator.

 

[Dewick911]

well i got a resonator delete and deleted the third cat im thinking i should get just get a j pipe since you said i should leave my piping alone

 

[milan.mastracci]

Did you end up getting the J pipe?