Quote Originally Posted by skeptic_ View Post
maybe i should clear things up, i have a vtir with an audm itr exhaust and im not sure if the previous owner kept the vtir cat or changed it with the itr cat but anyways i just want the best headers that will accompany my exhaust because for now im happy with the itr 2.25 exhaust. i also plan to change the intake to maybe injen CAI. What do you guys think?
The AUDM ITR cat is different to the JDM ITR cat that is if you are intrested to buy a jdm 4-1 header. So it'll be a nice stock combo with the jdm 4-1 header because most aftermarket header outlets are 2.5 i believe, so if you do get a 2.5 you won't get the benefits with the stock itr exhaust.

I'd say do abit more research on exhaust, price, sound, what you want to achieve. And in the meantime get an Injen CAI like you want, you will be very happy with it.