i guess my question is, will a jdm 4-1 header fit my b18a, and is it worth it to sell me dc 4-2-1 header for the 4-1. what kind of gains am i looking at. i heard that dc also made 4-1 but im getting a good deal on the other. thanks in advance

 

Hangs really low but its worth it if you can get it on a good deal.

 

anything else besides that?

 

more power is always good, right?

 

the header will fit on the b18a...but the question is..will it make that much power?

Khoi

 

More high-end power, lose a little low-end, but on average the gain is more...

 

4-2-1 is a better header, but its hard to see the gain unless you have a dyno

 

does anyone know the size the jdm header is at the cat?

 

2.5in.

The flange is tappered as well.

 

forgot to menshion that i have a carsound cat that is 2 and 1/4, so i go straight 2 and 1/2 all the way back and get a new carsound?

 

ttt