injector upgraged Options

[replica250]

ok ive been doing some digging on the net at posible upgrade injectors for my uk 3sge st202 celica gt 1994 year, its seems that standard are lite green toped 295cc?
brown are 250cc and the pink top flow 315cc?
is this correct if so if standard ones are green can i use pink injectors with no ill affects to running etc dont really want to have to spend 80 quid per injector from blitz as id have to use a piggy back or stand alone ecu with a avlue of more than i paid for the car in the forst place!
so in summery can i use the uprated injecotrs from nippon denso flowing 315cc and not have to mess with the car at all, may be just fit a fpr,
or does anyone know of any other altratives and where to sorse them from?
cheers jay

[Hafkai]

They're definitely 370-375cc, the part number on them should be 23250-74160 .. i had them in my turbo 7A-FE for a year.
Bigger injectors won't give you any power, like presure2 said. Even if you install slightly larger injectors your ECU would adjust the injector timing so that in runs like before. If you install to big injectors your car would just run to rich all the time and maybe you would lose some power.

If you want to optimize the injection and timing you have to install a piggyback like the E-manage Ultimate or AEM FIC. The stock 3S-GE injectors are good for 270-280bhp, i doubt that any street driven N/A 3S-GE will really need bigger injectors