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      03-08-2019, 01:28 PM   #7
JM98
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Drives: 2009 135i
Join Date: May 2016
Location: SoCal

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Quote:
Originally Posted by NonoxX View Post
While still having MHD Stage 2+? Is there no risk to run lean just doing that?

BTW I replaced spark plugs (97506 stock gap), and I see the same issues, but the engine overall feels smoother, for some reason I can't explain...
It will just bump your octane a bit.
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