All I know, and forgive my lack of automotive knowledge here, is that occassionally, entering the on-ramp of a free-way/highway from a dead stop, I do get a drop off in power from when I first accelerate. It is annoying, particularly when I am being a bit more aggressive and I am counting on the power and it is not there. I am hoping the magnaflows, Ram air intake and possibly the headers will improve this.