New alta pulley?
 

i have a 17% reduction pulley for mt supercharger. i recently found that alta now has a 19% reduction pulley. i dont know the increase in power from a 17 to a 19. does anyone think it would be worth it to buy the 19% after i already bought and installed a 17%?

I've read that the 19/20% ones require extra mods to keep up

any idea where i can find out what those mods r? i would love to do the mods and then get the pulley

large injectors and a retune/chip and an upgraded coil minimum

sweet thats not bad. too easy. i already have an msd coil pack lined up for purchase. thanx man.

anyone know what size the stock throttle body is on the 06 cooper s? i want to get an aftermarket throttle body because my mechanic told me that my problem with it acting weird and not wanting to go over 2000 rpms....a new throttle body might fix it. so i figured i might as well get an aftermarket one.

i want to get a camshaft for my cooper but one of my buddies said that i would need 2 camshafts since it is dual overhead cam. is this true?

true .. twin cams ...
I don't have the manual handy to find out the TB size

ok. thanx