Well my engine is built and its being broken in and everything. Right now I have a usdm dc 4-1 with stock cat and stock b-pipe with a crappy tsudo muffler. Heres the basics of my new setup:

b18b with JDM ITR pistons
b16 head with mild port/polish, CTR cams, ITR throttle body and intake mani.

I have other little stuff like cam gears, aem cai, and fpr. Im going to purchase a new header and exhaust soon and I was wondering what would benefit my setup. I was thinking a JDM ITR header with 2.5 pipping to a 2.5 straight thru muffler like an es oval, or the JDM ITR header to a HKS hiper catback... I cant decide which would be better. Any input would be much appriciated.

 

yea i want to know too

 

2.25 ~ 2.33 would be adequate for 1.8 litters but im sure 2.5 wont hurt at all!
2.5" has my vote!
JDM ITR 4-1 with 2.5" or better, 94100 series CarSound Cat, 22" Magnaflow Resonator, Mendrel Bent Piping, and either Magnaflow or ES muffler.

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That was the most helpful response I ever got here on h-tech, i got pictures and everything. Im probably going to go with that setup I cant seem to find HKS catbacks anywhere cheap enough. Thanks

 

Also does anyone know the pricing of the header-tech header? I read somewhere they were around 450? I think i would rather spend the money on that than a JDM ITR one.

 

Try PM'ing Header Tech yourself. i tried, but couldnt find the price..
https://honda-tech.com/zerouser...24733

 

Cool thanks alot bro.