there are tuners that do not get un-learned thru the ecu, and they involve remapping your ecu - like a moates 1/4 horse for example.
also, if your car is pre obd2, you can cut the 12v constant and tap it into a 12v switched line so the ecu resets on every start up.
the reason i say not to do it on obd2 is because smog checks that tap into the cars ecu will see that not enough parameters have been learned and the smog check will fail. obd1 however does not have this problem.
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