brand new honda owner here, trying to put a turbo first gen B16 into a 93 civic. i have a PR3 ecu, and a P28 that came out of the civic. here are my questions: * how is this chipped? is it an external chip that can be removed quickly? or is it an internal thing? * if a tune is chipped into the ecu, can it be retuned? like say i get a mail order setup then take it to the dyno, can they rewrite the chip, or is it a one time thing? * where is the best place to send the ecu to get chipped?