550cc injectors?

[stil bil]

what hp #'s are the 550cc injectors good for??

what would the walbro 255 fuel pump stand up to??

would the 2 plus an apexi S-AFC combine to provide enough fuel withstand at least 300bwhp??

or would i be better off with this:

Aeromotive Universal EFI Fuel Pressure Regulator

[ih8urdsm]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (stil bil @ Oct. 16 2002,9:38)</td></tr><tr><td id="QUOTE">what hp #'s are the 550cc injectors good for??

what would the walbro 255 fuel pump stand up to??

would the 2 plus an apexi S-AFC combine to provide enough fuel withstand at least 300bwhp??

or would i be better off with this:

Aeromotive Universal EFI Fuel Pressure Regulator</td></tr></table><span id='postcolor'>
1. &nbsp;close to 400 at the wheels.

2. &nbsp;around the 400hp level also.

3. &nbsp;Yes, more than enough

(add a Z32 mafs to the list)

4. &nbsp;no need

[boosteds14]

550CC injectors are good for 17-18psi of boost.

[Jeff240sx]

To get the ammount of power you can make off the injectors, here is the formula.
550cc / 10.5 (this give you pounds per hour.) = 52.38 lbs/hr
Multiply by the number of injectors.
52.38 x 4 = &nbsp;209.52 total lbs/hr
divide by a constant (.6 for a rich, safe estimate.)
209.52 / .6 = 349.2 hp.

Mustang people have said that a high-pressure 255 L/hr pump will handle 500hp on their cars. &nbsp;I'd assume 400-500hp for our cars.

I don't think that you would be able to safely run 550cc injectors off a S-AFC. &nbsp;With only a +/- 50% adjustment, i think you'd run rich at the low rpms. &nbsp;Go with a JWT ecu. &nbsp;They will also program in the Z32 maf, or cobra maf.

You have a lot of research ahead of you before you turbo. &nbsp;Like, get Maximum Boost and learn. &nbsp;Most people's choice for fuel is not 550cc injectors and a big-ass pump, or just a FPR. &nbsp;
-Jeff

[stil bil]

thanks guys,

jeff: thanks for the formula...and yes i have done a good bit of searching and learning..i do h ave the book and have read it and am doing it again...

the only reason i asked about the injectors was because a friend of mine in orange can get me 4 550 injectors and a walbro 255 pump for around $400 &nbsp;but from what you have tld me the 550's are way to much for what i need...i only want 250-300 hp, so i will go with the 370's(maybe the next step up 430 i think out of the sr) and either a s-afc(my current choice) or a jwt ecu, but i read that they cannot make (moddify) one for a 96!!

that is my plan for fuel unless i want to get really crazy!!

[DSC]

to tech talk we go... <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/cool.gif" border="0" valign="absmiddle" alt=':cool:'>