Im turboing my car and was woundering fuel management wise for 8psi. will 500cc injectors work? and how about a walbro 190 fuel pump, i dont wana do a 225 or 255 because that seems like alot of fuel for low boost.

 

better to have too much than not enough. get a 225 with 1000cc injectors and be done with it.

8psi means nothing. set a power goal.

 

500cc injectors will be fine for 8 pounds, however it doesnt matter what size fuel pump you get without a fuel pressure regualtor so make sure to pick one of those up.

i would get the biger fuel pump.

 

it is better to have more fuel than air but im having a wide band and will have it dyno tuned, 1000cc injectors for 8psi is seriously a stupid idea. and a fuel pressure regulator is only needed if i go above 190. which is why i asked if 190 is good enough.

 

8psi from let's say a t3/t4 xxtrim is very different than 8psi coming from a gt40r.

You need to be more specific.

 

it doesnt matter if you get 500 or 1000cc injectors.... its not like its going to be over kill. your just buying those (1000cc) so you dont have to go bigger in the future. you can control the duty cycles on injectors so 1000cc is not a stupid idea, its smart. The 190-255 are the same price so i would just get a 255.

just my two cents

 

its going to be 8psi on a t25, one of the smallest turbo's there are so power wise should only be around 220 hp. i know there the same price but theres really no need to dump extra fuel when as for 1000cc im not going bigger in the future im going to stay at the current set up. why not have perfect air fuel ratio instead of a ton more fuel than needed, fuel pumps can be rewired to give out a bit extra fuel if needed, needing a fuel pressure regulator for anything bigger seems just not needed.

Also my altitude pressure is only 10psi. so compared to sea level its like only having 4psi of boost. its going to be low power im not going crazy

 

you can still get perfect afr's with id1000s.

but apparently you know everything, so why bother making this thread?

 

Wow

 

RC 550s and walbro 225. Call it a day. If it's that small of a turbo, and those are the power levels, then no need to have such high flowing injectors, regardless of duty cycle. It's never good to run super low duty cycles on a big injector like the 1000cc.

At those power levels, and even if you decided to raise the boost up, you would still not be maxing out a 550cc anyway. Either way, you'll be fine.

If you ever plan on going over 500whp, then I'd suggest going up to the ID1000s.

 

thank you thats what i will do.