This is sorta apples and oranges, but I lost .2 seconds on the 1/4 mile in my 1993 LT1 Trans Am when I installed a Jet Chip, and it totally tanked my gas mileage. I then went with a custom chip from pcmforless and was much happier.
US Navy retired submariner.
previous cars, starting with my first.
1967 RS/SS Camaro
A long, undistinguished line of sedans, SUV's, and minivans.