Im wondering if im making the right hp at 16psi. Im making 368hp at 8000rpms tuned on pump gas. I would like to hit 400hp on pump gas is there any improvements that i can make with out upgrading the block or head. If upgrading valvetrain, which cams should i go with and how much it affect my stock sleeves life span. Here is my build:

Ls/Vtec 81.5mm
Ls B18 block stock sleeves and crank
Stock p72 head
Cp pistons 9.0:1
Eagle rods
Block guard
ARP head studs
JG intake manifold
JG ITR throttle body 65mm
Full race ram horn manifold a/c
Tial 38mm wastegate
Tial 50mm Bov
Greddy TD06 25g T4
2.5’ intercooler piping
Greddy intercooler
Turbosmart boost controller
Omni power 3 bar map sensor
3’ down pipe v band
3’ full exhaust
Walboro 255ph fuel pump
JG fuel rail
AEM fuel regulator
ECU p28 hondata s200
1000cc injectors precision

 

Moved to FI...this wasn't going to get any help from the Integra forum

 

Sounds about right... Upgrade the cams and retune should put you very close to 400whp at the same boost level...

Or you might wanna just go with a larger turbo...

 

X2 on bigger turbo. Your set up should do 400 pretty easily.

 

I am going to have to go with turn up the boost

 

bigger turbo. same boost. 400+

 

would a greddy t67 25g do the job. would anyone know if ITR camshafts would help too

 

ITR cams are great and yea prob a new turbo would be a good choice if you are ever going to want more than 400.

 

Why are you running such odd turbos? I've been on this site for a while and hadn't ever heard of a T67 25g before. Why not run something proven...like a 57 trim or 60-1? Either of those will make the power you want on pump

 

I'm just using turbos that i have on hand. will be buying 57 trim later on. T67 25g greddy turbo is off an evo stage 3 kit. T67 is TD07 compressor and TD06 turbine. Capable of producing 500+hp.

 

If it is capable of putting out the numbers then I would swap the turbo out and then turn the boost up a little, either way you're going to need to retune when you swap the turbo so might as well turn the boost up some and get what you are aiming for.

That is since you already have a turbo on hand.
If you can however sell both turbo's and buy another one, I would probably do that.

 

O.P. the original Hp sounds about right. Said he didnt want to go into head or block but a valvetrain upgrade and some ITR cams or Pro 1s would give him what he looking for little more power without having to up boost. Another turbo option if you wanted to stay around 400hp or so is a 30r or a s256. I think the s256 is a good bang for buck.

 

i hit 420whp at 17psi on a 60-1 with ls.vtec

 

i hit 397 with a stock gsr with type r cams on a garrett t67 topmount set up
http://www.b20vtec.com/forums/member...ne-2010-a.html