ok so i got a 2007ss/sc with a injen c.a.i and a magnaflow exhaust with 2.5 piping anyways the car seems to be running good but the boost gauge jumps around alot when in lower gears and daily driving through the streets like the needle will hit 20lbs and im not even on the gas all the way or anything like that and when im on the highway it hits normal boost 12.5lbs anyone got any ideas what could be causing this to be happening...

 

take it to the dealer. you still have a warranty. or a mechanical boost gauge. it just sounds like its the gauge, not your car.