On my truck with stock injectors and an Edge EZ, I gained 65hp this spring. I could not tell you what the EGTs were doing, since it took me until last month to actually drive holding the boost level where the system turns on (READ - operator error). Now I am running stage II injectors and still have the stock turbo. You don't need a BOMBed truck, just have the ability to get at least 25psi in boost. Even then I would imagine that a kit could be tuned for a completely stock truck and still get great HP gains and lower EGT's