Ethanol capability on stock Supra ?

AshvinP23

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I was wondering how much ethanol can a stock Supra run? If any at all? Does anyone know?
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Twisted Tuning

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With no tune bone stock, E25. although, no real benefits without a tune to take advantage of the octane. Unless the stock tune was just pulling a lot of timing on whatever base fuel you were running.
 

Axix23

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I was wondering how much ethanol can a stock Supra run? If any at all? Does anyone know?
My fuel cap says up to e15. But people on here disregard and run it up to e50 or so...... Run it at your own risk lol
 

Erty

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My fuel cap says up to e15. But people on here disregard and run it up to e50 or so...... Run it at your own risk lol
e50 on stock car no tune.. uh no
 

Eplejus

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Sticker inside the fuel cap cover says up to E25

IMG_20230805_172930.jpg
 

Erty

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Interesting
 

razorlab

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I ran E20-E25 on track with the 2020 OEM tune with no issues. I used it for knock resistance. I logged all sessions.

LTFT and STFT were in spec. The ECU is pretty good at fueling adaption.
 

FuzzyRev

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Sticker inside the fuel cap cover says up to E25

IMG_20230805_172930.jpg
You're not in North America, so I can see that being a bit different
 

Thraxbert

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My fuel cap says up to e15. But people on here disregard and run it up to e50 or so...... Run it at your own risk lol
It's because the OEM DME calibration isn't designed for more. There's no mechanical or material restriction against running more. Once the DME is tuned to run more, the next limit is fuel pumping capacity of the stock fuel system. None of this impacts longevity, safety, or reliability from transporting increased ethanol concentrations.
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