I just picked up a jrsc for my jdm b20 and my question is if I leave all of my stock b20 parts on the motor will the super charger produce the stock 6 psi or will it be higher like I've been reading. I was also wondering if I could buy a differant pully for the non-vech super charger. I also have been told that I could buy some type of stepper pully that will up the boost. I'm wanting to produce somewhere around 10-11 PSI. Any help will be great.