injector questian

[Newsome]

Who ever is doing the map can set the fueling up for them. Granted they are over kill for an s15 turbo but there wont be a problem.

[darren C]

ya they are a bit much but got um at a very gud price so hoping to use if i can

[will_c]

740s are too big, better off with 550s the theory is that you use an injector that's closer to max duty cycle rather than too far away, because it affects injector spray pattern and therefore fuel atomisation. And if your fuel ain't been atomised properly, it can't burn properly and effeciently!! And s15 turbo basically can't flow enough cfms to support that fueling..

[darren C]

740s are too big, better off with 550s the theory is that you use an injector that's closer to max duty cycle rather than too far away, because it affects injector spray pattern and therefore fuel atomisation. And if your fuel ain't been atomised properly, it can't burn properly and effeciently!! And s15 turbo basically can't flow enough cfms to support that fueling..

dats they kinda answer i was lookin for in a way bt dunmno wat to do now..

any1 hav any other views on this???

[will_c]

My other view is get the injectors and a bigger turbo

You've potential for big power with that setup

[darren C]

i bought the injectors while ago so wat to do ???????????
its my road car so i want usable power.. 300 to 350 ish

[will_c]

S15 turbo will kinda struggle past 320ish tbh..

Sell/swap the 740s for 550s, get a gt2871r and the pick your power figure up to 400bhp!!

[tweek]

You don't need smaller injectors 740cc will be grand if they are a good make this problem was with older injectors not the more modern ones speak to the mapper he will set you straight unless he is trying to sell something everyone else is probably guessing or googleing it.I'll be running 740 sards on a sr20det with a set up around 320bhp I rang them on a 350 bhp setup before with no problems.but all of this depends on the quality of the injectors.
And in relation to poor atomisation that is purely up to the quality of the injectors and if the atomisation was poor a car wouldn't even idle correctly.

As said already best not ask on a forum but talk to your mapper he will have more experience than most