http://store.summitracing.com/partde...p;autoview=sku

these piggy back or full?

 

not to interupt,but doesnt underdrive pulleys decrease voltages of the alternator while idle?

 

udp are junk..waste of money

 

i have been reading that ehe size of the pulleys on the alt and w/p make up the difference of the underdrive at the crank and that they will extend the life of your acc. because they are spinning less.

 

spinning less=less voltage

 

touche lol... are they really that much of a waste tho? doesn't just a little bit help?

 

250$$(steeda bbk) for like 2 horse! def not worth the money...better off doing a lighweight flywheel..also if u plan on supercharger ud have to get rid of them anyway

 

summit has em for 110 shipped, still a waste?

 

You will see opinions like this everywhere. I have had my steedas on 2 different cars over a 4 year period with no problems. I would do pulley before I would swap out a flywheel. It's your money do what you like. I don't have charging issues either. I suppose if you have 100 pounds of stereo equipment in the car then you might. I just have normal stuff in mine.

 

^+1 i have them on mine and gainedgas mileagetoo. with the price of fuel, they're not a waste in my book.