Thanks for the quick response John, Powerdyne makes three psi levels, 4.5, 6 and 9psi. I did find a company called Kruger Performance Products that makes 11 psi and 13 psi drive pulleys for the Powerdyne, as well as, By-Pass valve kits and Air to Air Intercoolers. As for customer complaints, I realize all product manufactures have their share of complaints and I'm looking for feedback from people who have experience with them. I like the ATI Prochargers strenghths, but like you said, It's noisy! I like the idea of a " quiet blower" and no oil lines to boot! Both Powerdyne and Kruger products can be found at www.powerdyne.com/ and www.namotorsport.com/
Also, I'm looking at a compression ratio of between 8 or 9 to 1 with aluminum heads.
Thanks again, Mark
[This message has been edited by Z-Dreamer (edited November 13, 2000).]