hey guys im lookin at which pulleys top buy i've done research on them if they are worth buying and for the most part people have said they are worth it. I looked on ls1speed and they have to different pulley a 25% reduction pulley or the crank and alternator pulley set. Which would be best for me? Is there a difference. Need some help thanks guys

 

Most places recommend the crank pulley only, especialy for A4 cars. I just purchased the ASP pulley from thunder racing, they have them in stock right now, plus the belts.

 

I would just go with the the ASP crank pulley That is what I have I felt a difference in power and the rpm's going up faster