Anyone running 4" pulley on AP1 vortech kit? UPDATE
I am getting retuned tomorrow with the 4" pulley for the vortech kit. It's supposed to make 12.5 psi for an AP1 I believe. So I am hoping that is the case!
My previous tune on the 5"(7 psi pulley) I made 343whp. I am really hoping to break 400whp with this but we will see. I know sometimes the pulleys can yield different boost for people so just wondering what psi people have been making with same size pulley on ap1 vortech.
My previous tune on the 5"(7 psi pulley) I made 343whp. I am really hoping to break 400whp with this but we will see. I know sometimes the pulleys can yield different boost for people so just wondering what psi people have been making with same size pulley on ap1 vortech.






