Do I need more Injector CC
 

I have a 1997 Toyota RAV4 with the 3SFE engine. Just for an occupational TSD Rally (that's Time, Speed, Distance for you rebels). and to spite (bushhhhh) once in the while around town. Installed I have 250cc injectors. I have a Walbro 255 LPH Fuel Pump gas pump, and 250 inj. Turbo is a T3/T4 .57 A/R. With a Apexi NEO, AEM UGO gauge. A also have a set of 315cc injectors. any opinions will be appreciated.

Anybody?

I would typically recommend 250 cc/min injectors for 125 hp max on forced induction for a four cylinder - that's way too small. 315 cc/min injectors would top out at 157 hp - not exactly a huge improvement. These may be slightly cautious numbers, but I'd go significantly bigger, maybe 440 cc/min or even larger.

Thank you Matt. I once had a Dodge Dart Swinger. But, they robbed it and t

Wow, how time goes by. Project done. I removed the 250cc injectors and installed Supra 315. BUT, I installed a V66 throttle body with a Celia manifold. Also, a Megasquirt PNP2. Without a doubt, I'll have to go 550cc. Runs well, but the engine feels like it can do more power. But I'm keeping it to 8lbs.

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