supercharger pulley (15%, 17%) - Mini Cooper Forums

stoner03 · #1 03-18-2009, 01:15 AM

wut is the difference between the alta 15% and 17% supercharger pulley?

bad venge · #2 03-18-2009, 06:47 PM

It's the % the supercharger is OVERDRIVEN ... The JCW uses a 14.6% pulley ...
IMO I run the 15% as thats closest to "factory" specs and shouldn't adversesely affect the car ... The higher % pulleys will require additional mods ect to keep up with the overdriven pulley

JCC · #3 12-05-2009, 06:31 PM

Good advice. Glad I checked this thread. I was looking at the Alta Performance pulley replacement.

gijosh · #4 12-31-2009, 12:42 AM

i run a 17% alta pulley with K&N short ram intake, 8MM Jackson Racing wires, and NGK Cool Temp Iridium plugs and i love it. if u have at least those mods i would definitely go 17% once i receive my header i just bought im going to get larger injectors and an MSD coil pack and then upgrade to the 19% alta pulley as bad venge advised me.