CRX b18 ls turbo 450 whp

[Stoneaxe]

I have a built b18a1 in my crx. It dynoed at 230whp at 8 psi (pushing 14 now) on a 42 trim turbo. I want to get about 430-450whp at 20-25 psi w/ quickest possible spool.
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Here is my setup:
B18a1 low w/ original mileage
8:5:1 JE pistons
Stock crank/ fidanza 7lb flywheel
Eagle rods / arp bolts, arp head studs
450 cc dsms
Block guard
Garrett .42 a/r compressor; .48 exhaust; stage 4 turbine/compressor wheel
3in full thermal
Rev hard manifold, tial 38mm wastgate
Neptuned
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Would 420+hp be possible with my setup? What would be a good turbo to reach this goal? What size injectors would should I get?

 

[Stoneaxe]

anyone?

 

[Jdm ls turbo Eg]

I have 855 cc rc injectors on my ls turbo and low compession pistons and my car is pushing 250 whp at 17.5 psi

 

[Briansol]

if you want better spool, you're going to need higher compression pistons (9.5-10:1) and ball bearing turbo like a gt30

 

[dadsdx]

running precision 680cc pushing 411whp @18lbs. 450cc injectors seem to small for the power your looking for.

 

[silver]

Sort of an old thread, but I'll ad this for whoever searches.

At 43 psi base fuel pressure, 450cc injectors will be flowing 3.01 lbs/min of fuel at 100% IDC. To get 450 whp, you'll need anywhere from 41-50 lbs/min of airflow, depending on how efficient your setup and tuning is (essentially your BSFC). Assuming you can get 10 whp out of 1 lbs/min airflow, you'll need 45 lbs/min airflow. With only 3.01 lbs/min of fuel to feed that airflow, you would have to run close to a 15:1 AFR to get there.

Assuming you're not insane and want something like an 11:1 AFR at 85% IDC, you would need ~720cc/min of fuel flow. So in terms of standard injector sizes, you would want 750cc/min injectors.

 

[LsTec]

If your goal is 450whp I'd just go with 1200cc injectors, you can always lean them out. Then you always have room to grow. Your going to need a fuel pump, and as far as the turbo goes if you want to spend the money go with the borgwarner bullseye s362, it's the best thing i ever bought for my car...

 

[Matts96HB]

If your goal is 450whp I'd just go with 1200cc injectors

..At the expense of idle quality. Properly sized injectors for the goal would be ideal.

 

[austin20110]

some 750's would be fine... maybe a tad bit overkill