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Hi!

Need info regarding performance chips from endtuning or any other reliable source for MS 40.1 application.

Need to know the minimum octane requirement, safe rev limit, and fuel consumption figures.

TIA
 

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Minimum octane- I don't honestly know, as we just have 95 and 97 in the UK.

I would imagine BMW have this to run as low as 91 safely, which is available in Europe, although 95 preferred. Once tuned, I would expect 95 to be safe, 91 to now be below limits
and to be avoided, and 97+ to have some benefits under harsher conditions.

Safe Rev limit is 6800-7000. I don't have any fuel consumption figures unfortunately.
 
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