Gtr Replacement Injectors

[boomtheroom]

what the biggest cc rating u can replace the stock r32 gtr injectors with ,without aftermarket ecu ,and running too rich?

[Adriano]

you cant, need an afterarket ecu or a reprogrammed standard one

[boomtheroom]

what about 550 cc nismo injectors?

[heller44]

Anything larger, will put more fuel into the engine per opening duration.. as Adriano said, you either need a remap, or aftermarket ecu.

James.

[Cubes]

The biggest you can run without an aftermarket ecu before over fueling occurs is.............................

Std 444cc GTR injectors.

[Godzilla32]

They are actually 418cc

[boomtheroom]

i have a couple of leaking ones in my 32 gtr,seem to be quite common in the 32,s are the 34 gtr injectors built any better?

[Cubes]

They are actually 418cc

Mine flowed 480cc at 40psi rail pressure. They would be around the 'claimed' 444cc at 36.5psi.

They flowed inline with what the old ap engineering site stated the gtr injectors too.

With the datalogit (powerfc) and stock ecu remaps the value to use is 444cc. If it were 418cc and we were using the 444cc value the maps would be lean.

Maybe the machine you used was out?

[boomtheroom]

when they leak from the body of the injector and not the o rings ,where do they normally leak from ,anyone foud out?

[boomtheroom]

also how do u get the injectors off the rail without petrol comming out i removed one after running the car with the fuel pump off till it died,pulled it out and flowed out all over the place,any special methods?

[MANWHORE]

There'll always be a bit of fuel, because the rail is filled with fuel. It's no big deal. There is no way to prevent it.

[boomtheroom]

thanks,do u know if anyone makes a aftermarket,replacment for the gtr same cc rating?