When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
How UDP work is that they slow the movement off all the accessories, in turn, allowing the crank to spin faster...so it "Under" drives the accessories...
If you bolt on a S/C...the S/C is an accessorie...so why would you want to underdrive the S/C??
If you underdrive the supercharger, you are holding the blower back from its potential...
and i thought i was bright!!! now i feel like an idiot for asking ...hell i have never had a SC but it now all makes sense.
thanks gang
YOU feel dumb? Until I read this thread I thought UDP stood for up/down pipes, like with the ricer crowd...I was thinking it didn't make sense in the stang world, but maybe meant a combo mod of headers and a midpipe..oh well, just wanted to put it all in perspective for you...