what size injectors with no fmu

**victor** · 10-16-2003, 08:52 PM

I know some guys may have asked this question but I couldnt find the answer that was looking for.
I was getting ready to get my car dyno tuned but the whos going to tune my car said that I should use
36lb injectors with calibrated mass air, a custom chip and forget about the fmu. 36ers are hard to find
and they seem to cost more. I also dont want the car to run rich before the boost kicks in
because live in California and the smog laws. Will 36ers be too much or can I use 24s or 30s with no
fmu and the chip. Im just wondering if the chip will keep the car smogable with 36ers.

stock 89 5.0, novi1000, 65mmtb, mallory hyfire box, accel supercoil, 255 fuel pump,160 thermo,
blk magic electric fan, off road H pipe, bbk fpr, 3row aluminum radiator, magnaflow muff

**5150 LX** · 10-16-2003, 09:14 PM

Alot of us are using 42#'s injectors with great success. If you kep your eye out on the Corral, you can pick up a set fairly cheap compared to new cost.

Looking at your combo though, I think you'd be fine with maybe 30's.

How many #'s of boost you running?

Instead of a chip you may want to look into a "tuner" such as the PMS, Tweecer, etc.

**MikeyMustang** · 10-20-2003, 04:44 AM

I have a eectuner for sale just the ticket for this kinda stuff

let me know

Mike

**Jason915** · 11-04-2003, 04:44 PM

on a stock engine I would not use anything over a 30# At 40psi the 30's would be good for 350~ FWHP. Unless of course you have alot of boost (10+) Then a larger injector may be approprate.

**Whistler** · 11-04-2003, 05:22 PM

I'll echo the suggestion of 30#'ers

**UNTCHBL** · 11-04-2003, 07:46 PM

I'll echo the suggestion of 42#'ers. :)

I'm going to use 42's with a completely stock motor and a novi2000 with tunning aid. :) Will see how it works.