Alright I did a search but couldn't find an exact answer. Basically I want the quietest possible mufflers to use and still see the gains in a true duals system. Right now I'm running a flowmaster catback and although some people say its not hurting me, im frankly just getting sick of the sound. The reason why I want quiet is because on campus the cops are hardcore about this kind of stuff.

 

Put in a Dynomax Ultraflow just like the one in the picture in my sig. If you
want to save some $$, get the aluminized steel instead of stainless. Very,
very quiet.

http://www.dynomax.com/documents/ultrafloweld_specs.pdf

Look at PN 17515.

 

the truth of the matter is, the only benefit of true duals on our cars over a nice cat back in the sound, and you don't want that, so why not just change to a different cat back? Less money, less time, and better ground clearance

 

no hp gain?

 

not really...maybe a few, nowhere near enough to make it worth all of the agrivation on a nearly stock motor.

 

truedualws6, do u run an x-pipe or does the muffler take care of that?

 

It's not an "x" or an "h", it's a 1.25" by 11" window in the siamesed parallel
pipe section.

As for the HP gain, I dynoed 12 rwhp over a 3" cat back system in a dual
cat car. I'd say that's pretty darn good. Plus my car is really quiet.

 

so u did not use an X pipe w/ the muffler? the muffler took care of the X pipe's function is what i am asking.

 

Look closely at the pics of the exhaust in my sig. You will see the section
of pipe I am referring to, plus there is a picture looking inside the crossover.

 

got it. thnx!

 

you also have a fairly modded engine, I doubt on a stock engine he will pick up anywhere near 12rwhp. Your setup looks really nice though, really nice!

 

Check out Spintech street sportmans. They are a little louder than stock until you really get on it.