I have a tune and typically I drive with Cruise on ergo tune is off. Tonight I was driving down this long hill by my house and as usual I had th car in 5th using engine braking to maintain speed. With the tune off, the car starts @40 MPH and will accelerate to @55 if I don't watch it. Tonight for some reason I had the Cruise off (Tune is on) and the same hill in 5th gear the car held 40 MPH. Had me thinking, am I in 3rd and not 5th. I checked and it was 5th. Felt like the car was actually being held back. Surprised me. never notice before. Ideas?