I have the GT2530s and with the Profac B Type II was boosing 24PSI. Bought the new Profac Type S because it advertized control up to 45PSI but could only get 22PSI!! Found out that some of the new Type S controllers had software flaw. Sent it to Greddy and reprogrammed and can now adjust to 28PSI. Also needed to shorten my actuator rods by 2 turns to add more pre-load. Can boost 30PSI with the actuator hoses disconnected (BE VERY CARFULL DOING THIS...FULL TANK OF RACE GAS,GOOD TUNE ETC.)