03 mach1 procharger

Hello everyone, glad to be a part of your forum. I have an '03 Mach1 I bought new, now has 3k miles. I've done a complete exhaust, added some rubber, a throttle body, 100 shot of no2 (no longer used), 42# injectors, Procharger 10 psi boost, a diablosport predator custom tune, and other miscellaneous items. I don't drag, just tear up the back roads of Gold Bar, WA. My question, or concern is, though the car is fast, it doesn't seem like the boost comes on as strong and quick as I expected. Seems like the boost climbs slower than I think it should. Am I expecting too much? I'd run more boost, but the engine is 10:1. I'm running 4.33 gears, and don't want to go lower. Any suggestions? thanx dk shadow grey