how do i mount a 2.5 header to a b16 stock cat? would it even make a difference since i have a stock cat.

 

It won't make much of a difference, but you'll need to have a larger flange welded to the cat. I'd go with a custom high-flow cat. If you plan to keep the stock cat, you're better off just running a quality bolt-on header with the standard 2" collector.

 

like what is a quality header with a 2" collector

 

dc
greddy
comptech

they're all the same when it comes to quality and power

 

Its going to bottleneck at the cat which will be a horrible restriction. Get a 2.5" carsound cat and exhaust along with it.

 

so would it be worth getting a jdm itr header with 2.5" collector? with a carsound cat or should i just stick with my dc-4-1 header and stock cat?

 

go with the itr

 

or buy a obx catalytic resonator like the one i'm trying to sell

2.5 inlet, 2.5 outlet.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bense &raquo;</TD></TR><TR><TD CLASS="quote">or buy a obx catalytic resonator like the one i'm trying to sell

2.5 inlet, 2.5 outlet. </TD></TR></TABLE>

Nice plug.

I like their fancy name for "resonated test pipe".

 

how much for the obx resonator? how is the quality and performance of the obx? what about length? what car did it come out of.