STOCK RB20DET max power?

[RXXXII]

Just wondering what people have been able to pull out of there STOCK RB20DET engines using a piggyback like an SAFC(2)(NEO). Realistic usable HP and TQ on stock injectors, internals, turbo, and maf.

[danielmcn]

So what are you changing? If your only doing bolt ons and an afc, then your only going to gain about 30-40 over stock. Thats at the motor. It takes parts being changed to make power, not wishfull thinking...lol

[RXXXII]

So what are you changing? If your only doing bolt ons and an afc, then your only going to gain about 30-40 over stock. Thats at the motor. It takes parts being changed to make power, not wishfull thinking...lol

Yes minor bolt ons. 3inch exhaust from turbo outlet back. Stock injectors. Etc.

I'm aware it's not much gain. But it is some. I'm wondering because I believe peak efficiency for stock turbo is 15lbs so I wanna run a consistent 14. Then map the injectors to provide accurate and efficient fuel.

I'm looking for more response more so than power. I already changed out stock smic piping from 2 to 2.5 all hard piping to reduce couplers. Electric fans also freed it up a little bit.

[danielmcn]

Well for starters I wouldnt push the stock rb20 turbo to 14, if you got a hold of a rb25 turbo then you could. Really though your only looking at about 20-30 wheel gain at 14psi on the stock turbo, but dont count on the stocker to last that long at that boost. Get you a rb25 turbo and trash that pee shooter. You could see gains of 40 wheel with the rb25 turbo depending on other stuff of course.