Injectors?

[hworanglei]

Do I need bigger injectors if I'm going to run my 420A at 5 pounds of boost?

 

[Knoob]

nope , not at 5 psi....

 

[SilverEclipseT]

What would be recommended to run 15lbs of boost

 

[Eclipse96Ryder]

440's or 550's, nothing smaller, nothing bigger

 

[sike]

I'm about to turbo my 420a tommorow and I'd like to know the same thing. I'd like the injectors to be able to suit 8-10psi, I'm not sure what size injectors I should order. Hahn 335ccm is $15 cheaper each then the 390ccm. Is 335cc/m enough? I have an FMIC also.

 

[1g4g63gs2gst]

don't listen to silvereclipse, 15 psi would cost you $1,000s of dollers to rbuild your enigen after it explodes in you face. eclipse96 had it wright. 450 to 550 would be good, stock turbo injector run about that much so get an account on ebay or find a junk yard in your area (this will help you on the price). do not go over dobble digets on a stock n/t, you will need at lest pistons to run 8 psi or more.

 

[SilverEclipseT]

Originally posted by 1g4g63gs2gst
don't listen to silvereclipse, 15 psi would cost you $1,000s of dollers to rbuild your enigen after it explodes in you face. eclipse96 had it wright. 450 to 550 would be good, stock turbo injector run about that much so get an account on ebay or find a junk yard in your area (this will help you on the price). do not go over dobble digets on a stock n/t, you will need at lest pistons to run 8 psi or more.

I dont remember telling him to run 15psi on stock internals

 

[1g4g63gs2gst]

my bad bro

 

[95redeclipseGS]

what injectors would be best for a built 420a running anywhere from 8-15?
can i replace the injectors before i go turbo??? and the car run fine??
rebuilding is gonna make it a while before i can go turbo
but since im gonna have the engine out i figure i might as well replace the injectors if that is ok to do
thanks

 

[SilverEclipseT]

Hate to bring up an old topic here but i have a Tuning question. I would like to know what kind of fuel curve to set my SFMU to for say 440cc-500cc injectors. I don't need a direct answer im kinda looking for informational site on it so i can figure out the best setup for what i have.

So if anyone knows anywhere i can research setting up fuel curves for boost rates and injector size can you post here. Thanks

 

[jayden1]

I just purchased a hahns kit from a friend and wondering what fpr to run i was told vortech sfmu but its expensive. I was also told to get cartech fpr because it was efficient and cheap. Ive also been told the cartech is crap. I was just wondering everyones opinion on the cartech. The only thing that wasnt included in the kit was the fpr. It was the stage one kit. Im putting the kit on my 96. Just in case anybody is wondering why im boosting 12.5 compression. Im not.

 

[SilverEclipseT]

Cartech is crap. Mine didnt even last a year and i had to replace it. With stock injectors i know you should run 12:1 ratio. 12psi of fuel to every pound of boost.