So i have had this swap for a while and its time to upgrade a few things. I have a JDM B18C type R and its mostly stock. The only thing I've done is:
Cold air intake
test pipe with 3" exhaust all the back
Supertrapp muffler

What I'm thinking about is proven power bolt-on's. This is a N/A set up and I mostly just race the car but i do drive it around town some. At some point I will want to make it a 2.0L.
So what really adds HP to this engine? 68mm throttle body? underdrive pullies? The headers I'm looking at are the stock JDM 4-1, Rage or HyTech, but hear Hytech is not making them anymore?!?!
Thanks for your help.

 

anyone have some input for me?

 

4.9 final drive!!! nothing better!!!

pwer mods.....toda header

light weight flywheel

65 mm tbody

velocity stack

chrome or hondata s300 tuned

cams/valve springs

 

Thanks Chad.