I have been told by several mechanics that when the battery is unplugged everything resets and that the computer has to relearn things about the car. How much truth is there to this/how much could the computer have to relearn? How long does it take before your computer relearns? If you have a chip in your computer, how does that effect things after the battery has been unplugged? I have heard that some 03-04 cobras actually dynoed higher with a K+N air filter after they had been driven for some time compared to what they dynoed right after getting the filter installed...the reason given was that the computer had to relearn or adapt to the new air flow.... Opinions? FACTs?