Nice! yes looks very good. I suspect you have decent air where your at. Elements of course has to be thrown in. Testing in the great 110 degree desert heat always put a frown on my face. That car must rip at that power on stock turbos!!

 

I have never been able to run more than peak boost of 18-19 psi efficiently on mile + runs with GT2 hybrid VTGS with 66mm compressor wheels. Still manage to run 6.5 secs to 100mph, just under 17 secs to half mile at 160mph and 26-27 secs to 186mph. Not bad for a stock engine turbo on VTGS. In gear its quick 50-70mph in 1 sec flat.

I can run 21-22 psi on short quarter mile and half mile runs and go even quicker but anything longer at these higher boost levels I get ignition being pulled.

I wonder if running E85 + meth helps as we just run pump gas mixed with a bit of MS109.

 

Of course usage duty cycle dictates the tune used. I've never said otherwise. I disagree that 22 psi with the correct intercooling, octane, and tune would cause the turbos to fail on the track, but I do agree that the tune my car has now is from the appropriate tune you would take out to do some serious track time with. The car is tuned for the street and acceleration runs, not sustained peak output for many minutes. Those are opposite ends of the spectrum. There are many variables, not just boost pressure, that I would change for a tracked tune.

 

Add a gallon or two of E98 or E85 to your pump gas tune and I'll bet the knock goes away.