Did you notice a gain with through the whole powerband?

 

i also have the asp crank pulley, nice s.o.p. increase. the engine revs faster, and i havent noticed any higher engine temps with a slower water pump speed.

 

The pulley is worth about 8rwhp and throttle response is greatly improved. I have heard no complaints about the pulley, other than the install is a bitch. I love mine. I went with a smaller alt. pulley too. I run a big system, and electric fans and I don't have any charging problems. This is a good mod to do, worth the $199.