[jaykay]

I haven't experienced any noticeable drawbacks. With my by-pass exhaust I started to get more snap crackle and pop.

Generally I felt more liveliness at 4k and above along with better fuel econ. There won't be any earth shattering change; there is the learning curve.

After the learning time I do recall punching it at 4k and feeling the change....now I don't notice much

....have a large TB now so....there is change again