HP Gain?

I am getting my new GT Spec muffler welded on soon.
The GT Spec is basically the same muffler as the Apexi N1 muffler.
The muffler has a 2.5" inlet so lets say they replaced my old muffler and where it used to go straight across they put a pipe then went out to my muffler. Im guessing they would use 2.25" piping to do that.
What kinda hp gains should I expect.
My only other mod is a short ram intake.

Thanks,
Owen

Only a couple....not enough to feel a difference

not much

intake, header, high-flow cat, exhaust - then you will begin to feel improvements

Depends on what muffler you had before, but power gain will prolly only be marginally incremental. If from stock, maybe 4-5, otherwise 2-3 in your state of trim @ the flywheel. Prolly "not much" at the wheels.

I agree with those guys. You wont be able to feel it...

Remember, your motor doesn't breathe better, unless you uncork it at both ends. Everything combined gives you better power gains...

Larger diameter exhaust piping, better filter/Cai, Header, Hi flow Cat.

I love people who think noise=HP......lol:loser: