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Title: Audi TT AMU Post by: Lkz666 on December 06, 2020, 11:26:40 AM Hello I am from California and I have a 2001 TT 225HP, I am on here to try and figure out how to delete some CEL's and pass the CA Smog test!
Already have an APR Stage 1 tune. Title: Re: Audi TT AMU Post by: grayjay on December 06, 2020, 05:20:09 PM APR tune will have lock up the ECU so that it cannot be edited via nefmoto methods. You can revert the .bin file back to the stock tune and make changes to that but not on the APR tuned version. One possibility is to get a spare used ECU to use for all of your nefmoto tuning and emissions testing, keep the APR tuned ECU as a backup and so that it can be swapped back in after you get your sticker?
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