when I was at sema last year I was checking out the unorthodox pulley kit and talking to one of the reps and he was telling me the they pulled like 23 or 27 hp out of their 3 piece pulley kit. I cant really remember exactally but It was an impressive #

 

Of course a product rep is going to tell you some rediculous increase from pull kit. You can remove your belts entirely and you won't even gain 26hp (for the minute before you overheat and meltdown).



On a similar topic... how much does removing your air pump help? I know a lot of folks do it to make room for modifications like single turbos but does it really add a ton of power?

 

Greddy 2 pulley kit $110

http://www.rxecret7.com/13542101.html