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      11-14-2012, 02:03 PM   #60
Dmacc
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Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal

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Quote:
Originally Posted by bmw335idizzle View Post
So if I'm running 50/50 ethanol:91, I don't really need the Cobb flash? Only if I'm running more than 50% ethanol? Also, you're saying every time I refuel, I should reset back to map 5 so it will relearn my ethanol:gas mixture? U do that by just going back to map mode and choose map 5 right.
You need to log your fuel trims to see where they are at, I would do that before considering going with the cobb flash, if you plan on running higher than 50% mixtures, then you will need the cobb flash for that extra fuel
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