z28pat

iTrader: (10)

I'm questioning getting the UD pulley either ASP or SLP because I have 2 amps running in my car, and don't know if it'd be wise to slow the accesories down to gain a few HP. the battery meter already goes a little to the left of dead center when I turn on the AC with the radio going.

pat

Blacker

iTrader: (3)

I have been running 2 MTX Amps and an underdrive pulley for many years with no charging issues.

MeentSS02

iTrader: (11)

If you are already seeing charging issues, I wouldn't do it...to tell you the truth, I'll probably be doing back to a stock sized (but not stock) pulley to drive my accessories (I only have a small, two amp system). I never felt anything from my UD pulley, and it has only proved to be a hassle with an aftermarket alternator (I had to idle my stock cammed car at 900 RPMs to get my 160 amp alternator to charge properly).