Originally Posted by
B20.eg
VID is weaksauce. i have the comptech stg 1 kit at 4.5 psi on my 07 SI and i make 257 to the wheels with the Eaton M-62. with my stg 2 kit i will see 300 at 8 psi. it doesnt make any sense that he is at 20pounds and seeing those shitty ass numbers. something isnt right.
You also have an 11.5:1 compression ratio to the cobalt's 9.5:1. Youre going to have to pump more psi into anything thats built for boost to get the same numbers as a boosted NA car.