GTM 1.5 upgrade

pokeyl

I just finished the read on your build. You did your tune? Awesome!!! any trick you could pass on to me would be very helpful. I will be starting with Sam's 1.5 10PSI. I have played with uprev on the stock motor for over a year before SC.

I have no dyno nearby but today I checked the boost PSI at RPM in 4th from 2500 to 7000. 3 PSI at 2500, 5 PSI at 4000, 8 PSI at 6500. Stage is so limited by the intake.

I also have external WB O2 for real reading and full datalogging along with the data from the engine ECU

Did you build the Knock sensor listed at uprev??

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