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      10-04-2021, 11:58 AM   #7
NoGuru
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Drives: 335is
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Quote:
Originally Posted by Slim415 View Post
I really want to go the E85 route as well. But I'm not sure I would always be able to get it. Question- can your fuel system adjust to pump gas if you can't get E85? Would you also have to change tunes at the gas station?
I have a custom tune designed to run on E80 but that can change by about 30% each direction and still run decent. To drop to say E30 I would have to flash a new tune and scaled down my Port Injection but its not a big deal.

You can do a flex tune that can very from say E10 to E60.
If you can get it and your fuel system can handle it, I highly recommend running at least an E30 tune. More power and less timing corrections means the motor is running more efficient.
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2011 335is DCT BQ Tuning / BMS CAI / VRSF kittyless DP's / Synapse BOV and charge pipe / 7" VRSF Race FMIC / Walbro 535 and 450 on BMP4 / E90 tune / Diff Brace / PR Coils / Relocation Inlets / DAW Stage3+ Turbos / MMP port injection / xHP Stage 3 / FPR and -6 fuel lines
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