How would the car run with 270cc fuel injectors at 10psi of boost with just the vortech fmu 12:1? Would the idle be alright? Try not to bag on me for asking this question guys, I'm just curious.

idle will be stock...the 10psi is what I would be concerned about.

*edit*

to clarify...273 cc injectors are stock injectors...with no way to raise or lower you base fuel pressure your going to idel like stock. Bt with a 12:1 rising rate fpr your going to have stupid high fuel pressure at 10 psi of boost:

43+(12*10)=stupid high.

^^what he said, but this brings back the arguement, is stock injector size 270cc/min, or 235cc/min? Either way, doesn't matter for your question though does it? You would have stupid high fuel pressures, but that was the past, embrace the future. No 2GNT'r should have use for a rising rate fuel pressure regulator, with as far as we've come with the MegaSquirt, just buy one and get yourself ahead of the game. You'll want it in the end anyways.

you're right...235cc. Major brain fart on my part.

So your idle would be wicked rich with 270 injectors without a way to lower your base/full vaccum fuel pressure.

sorry about the confussion before

I have 310's now at 7psi and plan on running about 14psi and would think that 440's would be fine for 14psi.

What disk/spring combo are those with a SFMU running that boost 14-16psi?

Corbin had his stock injectors clean and flow tested and they were 190cc. I have read that they were suposed to be 235cc but Corbin has proof they are 190cc.


Terry

Originally posted by Star Turbo Talon
Corbin had his stock injectors clean and flow tested and they were 190cc. I have read that they were suposed to be 235cc but Corbin has proof they are 190cc. Terry

wasn't their rumors that the 95's had 190's though? :shrug

cant the ecu correct for 10% up or down

i have 270cc injectors in mine
i am using currently the cartech with a recal kit for the 270cc
that they sent me

idle pressure is (if i remember correctly since i havent seen the car in 4 months now)
45psi

my logger at idle has never read more than +/- 5 on the STFT reading

the tech at hahn (brad) said that 10 psi would be the absolute limit for those injectors with a 100psi fuel pressure
and recommend no more than 8

just my .02