The standard recommendation is to reset the pcm every time you mod anything. I started my post with "No" and that's the real truth. Sorry about that. Any slight adjustments necessary should be made instantly. It's really your driving style that the PCM adapts to, which is expedited by a reset.
Sedan Revolution #103
focus in storage. hit a rock with the oil filter and locked it up.
gotta sort out a 351w 4 door fox first, then the focus gets a 2.5
commuting with a v6 5 speed mazda 6 wagon.