a while back I swapped a stock gen 3 supercharger on my car with a stock pulley. the car made about 4 lbs of boost. mods are ported L32 heads with 130 lb springs and an XP cam and headers. I recently found a good deal on a snout with a mps so I installed a 3.4 pulley, and the car still makes about 4 lbs of boost. with the stock pulley I wasn't too surprised about low boost, but now with a 3.4 it should be making more boost.
what's the likelihood that the bbv isn't closing all the way, thus preventing full boost. any other possibilities?
