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      07-28-2021, 09:58 PM   #16
chris719
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Drives: '08 M Roadster
Join Date: Oct 2007
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Quote:
Originally Posted by KennyFSU View Post
The ecu just compensated for the lower octane so I'd assume it didn't cause any damage but who knows long-term. If there haven't been any CEL then I'd say it's fine.

Talk about karma biting you back in the ass lol.
Plus, if the ECU retarded timing to compensate, his fuel economy probably took a slight hit, too. I don't know if it would make up the cost difference, but it would be amusing if it ended up costing the same overall.
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