View Full Version : Installing an Under Drive Pulley?

02-28-2010, 04:01 PM
My Brother ordered a 25% UDP for his L99 and wanted to know if anyone has done one themselves. I know they are a little different than My Ls1 can anyone offer me some info of how or what not's?


Nine Ball
02-28-2010, 08:50 PM
Here are a bunch of how-to articles we've written.