Just a thought...
When I installed headers, exhaust, intake into my Toyota Spyder I worked closely with TRD (Toyota Racing Division) and specifically asked them about resetting the ECU and if that is needed. They told me not to reset the ECU since it will "learn" what the proper air/fuel/timing mix should be over time with all the new parts installed. In fact, they said that if you do reset the ECU, you are putting it back to stock and everything the unit has "learned" up to that point goes away. Not very benefical.
Matt
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