alright i have the 4.0 crank UDP installed presently.....i bumped the RPM's of my truck up with the X2 that I have, but when the A/C is on and the 130A alternator (which is brand new - roughly 2 days old) slows down enough to draw the voltage down to about 12.5v at idle......
so I am thinking I need to install the smaller alternator pulley that Wayne sells......anyone have any opinions on this
also, what about the water pump pulley
it says in the description the following:
Originally Posted by www.stuffforyourranger.com
Must be used with Underdrive crank pulley.
is that true? will it help cool the engine better (not that i have a problem now, but any small bit will help!)