I hoping that the members of the .org can create the be-all end-all for UDPs in the 4th Gen performance mod stickies.

Yes, I've read threads on the .org, Maxmods, greghome.com, motorvate, etc. but no consensus on the UDPs and few dyno charts. Some leak, some aren't balanced, have belt size options, fitment issues, etc.

All I can say, as a newbie having read the 4th Gen performance mod stickies is that there is a DIY for the flip-flop trunk and nothing for the UDP. Yikes!

 

This is the reason I'm not getting one...

http://www.motorvate.ca/mvp.php/521

Ask DaveB, he saw a minimal difference between the UDP and stock pulley.

 

no more stickies, i think there are too many stickies as it is, just one stickie that has links for threads not only containing udp but exhaust, intake......

 

Overdrive and underdrive pully....which one is the larger of the two?

 

An overdriven pulley would be larger in diameter.

 

i have a motostorm UDP. one of the bolts that hold the timing plate on backed out. I had to weld into one piece, it sucked and took chunks out of the timing ring/block. Im happy with the performance though.

 

**Gunmetal GenII's off car and for sale**

how much?