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I upgraded to an RB25 turbo on my RB20DET.

Best $$$'s I spent on the car.

boost comes on at the same time or maybe 100-200 rpm later but holds and keeps pulling to well over 6500rpm.

mine is currently running 13psi and has done so for the past 6 months.

oh.. my car is an R32 GTST not R31, but I believe that it would be the same sort of outcome..

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  • 3 months later...

RB25 turbo is a direct bolt on to the Silver top (r32) RB20det.

Just make sure that when you get the rb25 turbo, you also get the intercooler ELBOW pipe that is bolted to the turbo.

the rb20 one is slightly smaller and the bolts don't line up.

if you are unsure about the pipe I mean, it is the one that is bolted directly yo the turbo, and it is where the intercooler pipes start on the turbo side.

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