I'm gonna do a side exit before the rear passenger wheel soon, and want to get some input on whether to get a SI/SO, or a SI/DO.

I don't wanna loose any low end torque, and would hopefully like to gain some. I'm gonna keep the factory diameter pipe as well.

Which brand muffler will give the best results?

 

the stock intake and muffler and pipe size were designed with peak tq numbers 1000-3500 rpms

 

So, there are no cat backs that will increase low end torque? That is mainly what I am looking for as well. I want some LOUD too.

 

Are you changing the muffler only or from the cat back?

Magnaflow or Borla are the top two for performance. Single 3" systems. Muffler only will not get you much power but a different sound.

I'd look into reprogramming your PCM for more power gains, though.

 

get a dual in dual out muffler u will keep ur torque and wont have to buy or make a X or H pipe.