'15 Cruze Turbo - Why can't I get my boost to turn up?

[TCSS07]

You are right as well lol. Maybe zzp changed their ways because my mail order from them was 17-18psi but that was 3 years ago but never the less if he wants more boost mid range to give it more torque then by all means go for it but for up top that little guy just cant do it and maintain efficiency

[Jeff7577]

Looking at a stock calibration it is 32.6 psi max which for my altitude comes out to be over 18 psi at max manifold air temp. Obviously it won't hit that due to other limiting factors in the tune, but that is the max GM set from the factory.

[TCSS07]

zzp on their website says they start at 16 psi and end up between 15-19 psi when its all said and done based on logs. But its not my car so everyone is free to do what they want. Im just going off what they say and knowing the turbo but with that said im sure there is a gain to higher boost lower in the rpm band for torque just dont expect that turbo to perform up top like a performance turbo

https://zzperformance.com/collection...uze-sonic-tune