What should I go with, mods are in sig. I'll be using magnaflow straight through mufflers...

 

2.5 easier fit.

 

I have 3". But 2.5" is plenty unless your going FI

 

I have 2.5". I might switch to 3" since I'm spraying. If I decide to sell the 2.5" duals, let me know if you would be interested.

 

2.5
3 inch is too freakin loud.

 

2.5 is plenty i wouldn't hassle with 3

 

Getting over the rear end really is a bother with 3's, if you are using a cat the 2.5 will be able to carry the full flow the cat allows. If this was a racecar with no cats then i would inclined to advise 3 inch pipes ( they do look cool)

 

Agreed. 2.5" is plenty for 99% of the hot cars on this board.

 

Also take in to account, you will loose low end torque with 3" pipes.

 

2.5 all the way.. no need for 3..

 

I got 3in on h/c/n2o and it sounds amazing.....still have good ground clearance

 

i must be getting old, mine to loud for me.
hell i even took the bullets off and put on some flowmaster race mufflers.

 

Im running a 3" x into dynomax race bullets. Sounds great but is loud. Ground clearence isnt a big deal except my turndowns are a little low.