I recently mounted a stageII procharger on my Baja 272, 502EFI with Stainless Marine exhaust system and a Land & Sea stern jack. Before the installation I was running 67mph(gps) with a 25" Mirage 3 blade. After the procharger I had to go to a 30" 4 blade bravo to keep it out of the rev limiter. I am running 5lbs of boost and was planning on picking up a little more than I did. Everything that I had read told me that I would pick up between 14 and 20 mph but I can only manage to pick up about an honest 10 mph. The boat is running a little rich but I figured this was a good thing. My question is has anybody with this similiar set up had the same type of results or do you have any suggestions to get me to that 15 mph pick up? Thank you for any response.