NCTURBOS said:Not a true comment. Sometimes "new" doesn't make it better.
That's good performance. We've had cars run 11.3x-11.5x with very similar bolt-ons, but at 24psi.![]()
My experience with the GT61 is that if you were to turn it up from your 23psi to say 26psi you would either gain nothing or lose HP. Whereas the Ta/Te61 would continue to gain and outperform the GT61.
K.
I think that is more a function of the exhaust wheel and not the turbo itself. I have several videos of EVOs making over 600 whp with GT-35R turbos which uses the same compressor wheel and only 2.0/2.3 liters engines.
I'm confused by the fact that a TA/TE-61 can make more power in the upper boost range unless you are comparing it to the GT61 turbo mentioned using a 31E wheel. I'm sure one with a 52 wheel and S cover or larger exhaust wheel would not experience what you are describing. The only way to find out is to test one on a GN at 25+ psi. I have accidentally hit 23-25 psi and the car felt anything but like it slowed down, but I have a different exhaust wheel.