When I bought my car the owner gave me aftermarket pullies (and about 3 other boxes of parts) and he said he took them off b/c of the drain on the electrical sys. He said he could feel a littlehpdifference, but my car isnt that modified. Either way, since I already have them Ive been thinking about throwing them on with the stock alt pulley. I also want an electric fan.

 

yea the owner gave me them.

 

im just sayin... id be quicker to sell them and make a few bucks... but hey, if u wanna use them, use them, just keep ur stockers just incase...

 

You guys need to upgrade to a 130g alternator. Then you should be okay with the underdrives. But with the stock alt on your fox's and an electric fan, you're asking for charging issues unless you drive all highway.

 

Ive heard that the fan can give around 15hp difference, is that true? My current mods are headers, off road h, flowmasters, eddi intake, and 3.73's.