No change in kr and took it for one rip. Car was no faster with the 3.4 & blower actually whines less. All i did to the blower was create a triangle instead of the stock arrow. I know it needs a tune but timing, little bit of kr didnt change from the stock pulley. I used a zzp mps, stock belt and zzp larger tensioner pulley.

Thought i would instantly feel and hear a difference even untuned.