busterpit23

I am thinking about changing out my RC 1000cc injectors for a set of RC 1200cc injectors. I plan to push over 700hp on my 2.5L turbo setup and was worried about killing the injectors when I run a higher boost levels. I did some calculations on a site and it said I would be over 90% duty cycle with my current injectors, if I were to push 700hp.

Would the drive abilty and tune be affected much with the use of 1200cc injectors?
I know 1000cc are usally as far as some people recommend for street use but I want that little extra for insurance.

Thanks

CourageOO7

umm...that's a whole lot of injector. I am going to venture to say that you are not going to idle like stock...hehe

h22acivicjdm

i run rc 1200cc. my car idle alittle high maybe 1100rpms thats it.

Asura

It all depends on the tuner.

afwfjustin

It's definitely the tune and weather conditions. My 1000's drive like stock - only with half the gas mileage

busterpit23

Thanks for the input guys.

camuman

what kind of fuel pressure are u guys running? i know you can cheat to a certain extent with raising the fuel pressure to gain some more flow from the injector, but wondering what most are runnin for FI.

1200cc injectors are huge! using rc engineerings calculator, you can use a 750cc injector and make 500 at the crank with 75psi in the fuel rail and still be at 80% duty cycle. does anyone do this?

c_me_go

you should just go with a twin injetor intake mani.. you can run 300cc and the second set a 1000cc when in boost..

CourageOO7

75psi is a very high fuel pressure to be running. Running higher fuel pressure makes it harder for the injector to open initially. The stock FPR makes 42.5psi or so...that's a big difference.

afwfjustin

I'm running the AEM 1:1 with my 1000s