I got my integra turbo and its running really great.... but 5.6psi isnt much..

I was wanting to build my motor for about 300hp...

My B18a1 has a fresh rebuild with 65k on it...

Right now, my setup is:

Tubular T3T4 Manifold
Garrett T3T4 60/63 57trim
Tail 35mm External Wastegate
Greddy Type S Blow Off Vavle
JRC 30x6" Front Mount Intercooler
2.5" intercooler Piping
Custom Oil Kit
450cc Injectors
255 Fuel Pump
Unberdata
Stock Map Sensor...

Whats else is needed to Meet my goal for 300hp?

 

well, right now your running almost the exact same kit as me. Dont be so conservative with the boost, turn that ---- up that motor can handle it. lets see some pics too.

 

i second that. all you need for 300 is to up the boost

edit: new cams wouldn't hurt

 

turn that ---- to like 12psi right away.

you'll be happy for a little while at least

 

i had my ---- boosted 15 psi for almost a year on a .42/.48 t3 and i never had any problems, granted the cfm is a lot lower than your turbo, i would get wideband if you dont already, and make sure you have a good tune.

 

And injectors and MAP sensor and tuning.

Yeah yeah 450cc will do 300, but there's no margin of safety.

 

I ws thinking about turning up the boost to about 12psi.. but im not sure if i need a aftermarket map sensor....

 

it is not needed but tuning will be more presise because with stock map you will have a rich spot between 9 and 12 psi. xenocron sells the 2.5 bars for about $35