ON a tuning run tonight, at wot, it registered 13.8 boost. I hadn't heard of the Radix pushin that much air before. I guess I don't know enough to figure that out. What exactly is measured when figuring boost? Not volume of air, but pressure? Must have to do with volume and pressure and velocity of air all combined?

Wonder what hp numbers will come out of that. Hadn't really planned on doiing a dyno pull but as the tune improves I'm getting curious.

Missed your question about the pulley on first read.

Running the 2.8" pulley.