if i were to put 1600cc injectors in my 1990 tII with a 255lhp fuel pump and custom fuel rails and **** wouldnt i be running extremely rich? Would the s-afc help to change that or wat?

 

what else you have done? stock are 550. why are you even considering these? some people actually need them. they won't be running "extremely rich."

 

well i want crazy horsepower some day... and i dont feel like buying 720cc injectors... then one day have to buy 1600cc... u kno wat im saying?

but so far all i got is turbo back exhaust RB
k&n cone filter
fcd
ported wastegate
walbro
custom fuel rails
s-afc

 

You could just buy 2 720cc injectors now and put them in the secondaries and later on when you upgrade swap those to the primaries and get larger secondaries. I think the safc will have a hard time tuning down the 1600s. By the time you reach really big power most people on the forum would recommend that you run a standalone anyway.

 

Hell yes. The engine simply wouldn't go past 3800rpm, as the amount of fuel injected would suddenly double. Even with a fuel controller, you'd need to set it to -50% just to get it to run normally. Since that's the lower limit of an S-AFC, you have no further scope for tuning.

Basically that injector combo is simply too big for a fuel controller. You'd need a proper EMS to do it right. Those injectors are sufficient for nearly 600hp anyway, so will you even need them? Ever?

 

thanks a lot and no i wont ever need them lol.
this cleared a lot up for me tho i apreciate it thanks guys

 

Get 850cc's of an FD and run them as your secondaries. Later on when you plan to make a good amount of power, you could move the 850cc's to you primaries and run 1600cc's as your secondaries, of course at this point you would need stand alone. BTW your car runs off your primaries at idle and very soft/slow driving, the secondaries come one once you give it WOT (wide open throttle). I know of a 624 whp FD with 850cc's primaries and 1600cc's secondaries and his injectors are not near maxing out.

For now just get the 850cc's, they'll suite you just fine.

 

There is no way to mount side-feed FD injectors in an FC. Forget that idea now.

 

Where can i get some 850cc injectors? cuz i'm still at stock... also would it increase power? (im just starting to work on my car)

 

I got mine at Marren Injection.

 

custom fuel rail.