Rep Power: 0

...to 2". I wanna keep it down cuz its just too loud and annoying. and i think my exhaust have a leak too. will this be a good idea? what smaller size do u guys recommend?Thanks

 
Rep Power: 320

I say 2" is the good. If you go any lower you'll be as stock. I believe that Stock is 1.75".

 
Rep Power: 0

It will be quieter, right?

 
Rep Power: 320

if you want quieter why not just buy a resonator and have it put on. That way you won't have to spend more on a whole new system.
Just a sugestion.

 
Rep Power: 0

the way the shop did mine, they enlarged the opening of the pipe that connects the muffler to the pipe to the cat to connect the two. plus its 2 separate pipes from the cat to the canister. i'm thinking theres a leak becuase the it sounds a lot different from other exhaust that i've heard. its louder too.
BTW i have a 5zigen muffler

 
Rep Power: 0

you have 5zigen universal exhaust and have custom piping done? I was considering doing 2.25" piping is it really loud though or is it cuz of the might be leak? Cuz i also have a 5zigen exhaust

 
Rep Power: 0

i really think that theres a leak. Im gonna go tomorrow to a muffler shop to change the 2.25" pipe to a 2.0" pipe. pls tell me or

 
Rep Power: 310

yes do it 2 inch gives u more torque like u did stock and also gives a better response on fast speeds.

 
Rep Power: 0

i had that setting 2.25 no resonator with 5 zigen fireball..
it wasn't dat loud.... comparing to my hks hiper.

 
Rep Power: 0

stock is 2", but youll actually get 2 benefits, youll regain the torque you lost with the bigger pipe(lost some backpressure), and youll gain a little powerover stock, maybe .3hp, because of better flow from the custom(im assuming madrel bent?) tubing, not that that matters, but since itsll be smoother flowing youll gain a MPG or so.

as for loudness, i doubt itll really quiet it that much, you prolly have a leak, easy way to tell, have the car running(in neutral of course) and go from where the aftermarket exhaust starts, all the way to the tailpipe. run your hand over the pipe, not on it, but sort of "hovering", if there arent holes in the piping, check at the joints, if theres a leak, there will be small pulses coming out, and youll hear it a little too.

hope that helps.

 
Rep Power: 348

Stock for our car is 1".

 
Rep Power: 0

2" is good.. i've got that with a Magnaflow muffler and a glasspack, and it doesn't sound bad at all..... of course, it was waaaaaaay more louder and annoying with just a 2" and Magnaflow. i'm not sure how the 5zigen sounds though...

 
Rep Power: 0

No car benefits from backpressure. You want your exhaust to flow as much as it can and the 2.25 will help over the 2.00. Put on a free flowing resonator instead. The smaller your pipe diameter, the higher the pitch of your exhaust. I've got 3" on my '69 mustang (500+ hp) and it rumbles way down low...