I purchased a used 2.8 kb not to long ago. It was a 2.8 super snake with 3.5 pulley, I swapped pullies and put a 3.0 on it. I still used the belt that was used with the 3.5 pulley. Right now when I actually look at boost gauge it showing 14lbs, so thinking I got some belt slip. Wondering if I need to use different belt length or maybe just install new belt. Thanks for the help!