Question: How does the Hoppen chip work as far as having to mail in your ECU, etc.? If I decided to go w/that chip, would I have to mail in my ECU? Would I have the option to go back to my stock chip if I ever decide I'm not happy w/the chip, or if I ever decide to sell the car(both of which I'm sure won't/will never be the case!)? Thanks.<p>JT 99' 1.8Tqms and starting to really want a chip!

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