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OP,
IIRC std tune/hardware should cope with ~ e20 content w/o issue.
From you photo, my read is that yr local pump gas goes from 87/e10 thru to 93/e30, such that gas is a low octane base product blended with added ethanol to bump up the octane. The higher the eXX blend, the higher the octane.
I'd run the 91/e20 initially as I think you might struggle with an e30 blend....
Here in the UK, we have SVP fuel [99RON (AKI 95.5-96.5) with e5]. I've add ethanol 1.5-2 imp gallons to a full tank to get a ~e20 blend to boost octane and the car works really well on BM3 OTS racegas & e30 tune as SVP (base product) here has higher octane and less ethanol content as the starting point.
HTH, BP
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Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten:
Current '22 X3M LCI..
Last edited by Bee Pee; 07-10-2020 at 09:17 AM..
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