On lmperformance.com there are 4 packages, 2 have a 34% underdrive and are really inexpensive and the other 2 have a lesser 23% underdrive pulley but are really expensive. I have heard thatthe asp is worth getting for its combination of 2 parts and weight savings but which one is it and whats the difference between the 34% and the 23% pulleys?

 

I have the steel 34% and it works fine with my 97s stock alternator. I can see if you have alot of electronics though it being a problem.

 

The 23% one should be the integrated version that is mentioned in another thread here (the one I have).

 

The 25% pulley (according to the ASP website) is an integrated damper AND pulley.... one piece, high dollars. The 34% pulley (according to the ASP website) is a pulley ONLY and sandwiches behind the stock damper.

My own experience indicates that the tiny power gains are more than offset by charging issues, at least with the combination of the 25% U/D damper/pulley and the 15% U/D alternator pulley.

 

Well like you said though charging shouldnt be an issue with the overdriven alt pulley...