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      10-07-2019, 08:49 AM   #29
bjcarls
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Drives: 22 Tahoe, 22 R1S, 23 Z07
Join Date: Oct 2015
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Quote:
Originally Posted by Blubaron79 View Post
I still think this pre and post tune is a bunch of BS.
If they played with the ecu I would imagine they'd have to do EPA testing again which I can't see BMW doing.
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