That's what I had testified to in an earlier performance thread.
I love the sound; so I tend to let the rpm "wrap up" in 2nd & 3rd, just to hear it. That has probably cost me some gas!

But, I do get a quicker pedal response and jump start when I need it.

Crewzin,
Any chance there is also maybe a problem with remount, or reconnect of the sensor contributing to less power? Does this call for a disconnect of the battery, to let the computer reset?