Quote:
Originally Posted by Shiv@Openflash
It could support maximum power by running something closer to E40.
So, to say that running an E85 tune without a flexfuel sensor to account for seasonal/daily ethanol % variation is dangerous is not true. Running an proper E85 tune and then suddenly filling up with a tank of E60 isn't going to make your engine knock. Simple as that.
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If I wanted to deliberately dilute what I get from the e85 pump down to the minimum the car needs for safely achieving maximum power would it be possible to dilute it with 87 (I assume the 15% gas already in the mix from the pump isn't premium to start with) and if so does that change the % mix which is safe to run without risk of knock?