Who has put the Unothodox Racing underdrive crankshaft pulley on and has good things to say about it? somehow caught myself reading about it for the last half hour because i always wondered what the deal was...lookin for some first hand experience...
thx

 

I had the under-drive set on my car and didn't notice a difference. The car was dyno'd before and after installation yielding no gains. I dyno'd the following day as well with the same results.

 

Not worth the risk IMHO.