Turbo Injectors... What size? - Honda Prelude Forum

lilbill97 · 09-12-2008, 03:51 PM

Im planning to be running 20 psi on a fully built h22a, 255 lph fuel pump, 9:1 comp.
Im thinking of RC injectors either 750cc or 1000cc

Which should i get? and what is the difference between PEAK AND HOLD and SATURATED injectors?

Thanks
Billy

Tee-Dot · 09-12-2008, 04:34 PM

That sounds like an awfully large amount of boost....

rayslude · 09-12-2008, 05:18 PM

In my opinion, you can never go too high with injectors. Keep in mind that some ECU's can only control a certain amount off cc's. For example, I think Hondata can only control up to 1000's, someone correct me if i'm wrong.

Qveon · 09-12-2008, 06:30 PM

Quote:

Originally Posted by lilbill97

Im planning to be running 20 psi on a fully built h22a, 255 lph fuel pump, 9:1 comp.
Im thinking of RC injectors either 750cc or 1000cc

Which should i get? and what is the difference between PEAK AND HOLD and SATURATED injectors?

Thanks
Billy

Sheesh my crome says that at stock fuel pressure, 500cc would be the smallest on gas. (At turbo 100% efficient) Especially with that pump. Peak and Saturated are virtually high or low impedence. If you are running a 5th gen you need saturated injectors.

Artifex · 09-12-2008, 08:52 PM

Quote:

Originally Posted by rayslude

In my opinion, you can never go too high with injectors. Keep in mind that some ECU's can only control a certain amount off cc's. For example, I think Hondata can only control up to 1000's, someone correct me if i'm wrong.

You can definitely go too large. Too large affects throttle response, gas mileage, and idle quality.

Artifex · 09-12-2008, 08:54 PM

Quote:

Originally Posted by lilbill97

Im planning to be running 20 psi on a fully built h22a, 255 lph fuel pump, 9:1 comp.
Im thinking of RC injectors either 750cc or 1000cc

Which should i get? and what is the difference between PEAK AND HOLD and SATURATED injectors?

Thanks
Billy

Look in the N/A library under the Other section, it has info on injectors:
N/A Performance Library (README!)

Use the RC Eng. calculator to compute ideal injector size.

lilbill97 · 09-12-2008, 09:00 PM

well i will be running a Aem ems.

lilbill97 · 09-12-2008, 09:06 PM

I did the little worksheet on injectors and i got 966cc/min but i didnt know what some off the stuff meant so i just kept what was filled in.

So im leaning towrds 1000cc?

keahistight · 09-13-2008, 08:11 AM

I hope you have a built motor.
You will need to run 1000cc.
Peak v. Saturated really equates to low v. high resistence.
5th gen is saturated but you can run peak with some basic wiring.
I recommend flying out John Reed for the tune if you are going AEM PEMS.

RacingGasLude · 10-07-2008, 04:51 PM

The bigger injectors the better

What valves are you running ?
My h23a1 is being bored out .040 over next week

rayslude · 10-07-2008, 08:39 PM

Quote:

Originally Posted by Artifex

You can definitely go too large. Too large affects throttle response, gas mileage, and idle quality.

learn something new everyday... thanks ken!