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      08-21-2018, 10:09 AM   #61
bigjae1976
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2013
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Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Houston, TX

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2004 BMW M3  [6.33]
2011 BMW E90 M3  [6.83]
2013 BMW 328i  [6.67]
Quote:
Originally Posted by warp10 View Post
Changing the diff ratio with out somehow telling the ecu that it's changed is not a good idea. Over revs can happen. The ecu is expecting a certain ratio so it rev matches based on that. If you change the ratio it is still going to assume the stock ratio. Just my .02. I have been researching this for a while. Syvecs allows for the change.
I've been told that the ECU has no final drive setting like the MSS54 has.
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