when the L is warmed up, theres a weird high pitch sound on the drivers side of either the supercharger drive or the accessory drive belt. its really annoying sitting at an intersection at idle and hearing that, anyone know what it is?

 

sounds like a idler pulley, pull the supercharger belt off and check to make sure the pulleys spin freely

 

I have the same problem, does it goes away after a while??

 

if the bearing is going bad no, it'll either make more noise, or fail and lock up eventially, if that is truely is the problem.

 

how can this problem be fixed, by the way both idlers spin freely without the belt on

 

no, I meant that you need to pull the belt to check if the pulleys are not spinning freely, if they are truely bad bearings the pulley needs to be replaced.

 

now i got people saying it could be the crappy Gatorback belt that came with the 4# pulley i installed because i never had this sound with the factory belt. by the way the 100mm idlers i installed arent the problem thank god. for now

 

The sound that you are describing is almost certainly Gatorback belt noise...

mine sounds kinda like alternator whine from a poorly wired stereo/radio.

it's been there since I installed the 6lber and I haven't had any problems... it goes away with the belt off.

gatorback belts are a little noisier, but they definitely are not "crappy".

much better than the stock belt, IMO.

 

try a gates belt.