Anyone know what the psi scale is for smaller pullies on the tvs? as it sits right now with the stock one I already max it out at 20psi. Just curious if I ever DID decide to drop pullies how much boost each size would push. I know there is downfall to running more boost and all that.

 

https://www.cobaltss.net/forums/adva...ow-faq-184037/

 

There are many variables too. Are you on stock motor? Ported head? Cams? Exhaust? What rpm makes a difference too.

 

This^ My TVS with a 2.9 only makes 17psi with a ported head and mix matched exhaust parts of the correct size