E85 on stock setup question

azn_fcuk · 02-08-2021, 06:19 PM

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Does anyone run E85 on their X6MC/X5MC stock setup?
If so what is the safe ratio of E85 to 94 octane fuel?, and would that be the same if someone were running a piggy back like racechip or JB4?

Tenac · 02-08-2021, 07:03 PM

Interested in this as well.

Typically I won't mess with fuel mixtures unless I can monitor the engine so I can dial in my mixtures... I know you can simple do math to get the octane but I like to watch it live via a tuner after a flash.... So I've never used a piggy back to do this. On the other hand I typically use a lot of Meth too.

azn_fcuk · 02-08-2021, 07:19 PM

Quote:

Originally Posted by Tenac

Interested in this as well.

Typically I won't mess with fuel mixtures unless I can monitor the engine so I can dial in my mixtures... I know you can simple do math to get the octane but I like to watch it live via a tuner after a flash.... So I've never used a piggy back to do this. On the other hand I typically use a lot of Meth too.

I used to run 3 or 4 gallons of E85 in my 94 octane with my S55 M4 and a flash tune, I heard you can run the same with a JB4. I'm installing a Racechip on the weekend and it would be nice to know both stock and piggy tuned options.

Tenac · 02-08-2021, 07:37 PM

Please keep us posted!!

raym3cs · 02-08-2021, 08:25 PM

e85 will do nothing without a tune and proper gapped spark plugs (NGK)

also e85 burns way faster that unleaded gasoline
so if you are not using it for performance
you are just burning cash

hybrid_eg · 02-09-2021, 09:59 AM

yep, if you want to run e85 you should tune the car to E85 as it consumes far more fuel, furthermore you should also increase size of injectors as fuel demand is greater..

02-08-2021, 06:19 PM	#1
azn_fcuk Lieutenant 177 Rep 482 Posts Drives: M4, X6MC, AMG GT Pro Join Date: Sep 2014 Location: Canada iTrader: (0)	E85 on stock setup question Featured on BIMMERPOST.com Does anyone run E85 on their X6MC/X5MC stock setup? If so what is the safe ratio of E85 to 94 octane fuel?, and would that be the same if someone were running a piggy back like racechip or JB4?
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02-08-2021, 07:03 PM	#2
Tenac Brigadier General 4537 Rep 3,506 Posts Drives: All Join Date: Mar 2019 Location: AZ iTrader: (0)	Interested in this as well. Typically I won't mess with fuel mixtures unless I can monitor the engine so I can dial in my mixtures... I know you can simple do math to get the octane but I like to watch it live via a tuner after a flash.... So I've never used a piggy back to do this. On the other hand I typically use a lot of Meth too. __________________ 2022 M8 Comp Convertible 2023 718 Cayman GTS 4.0 2019 718 Cayman Base 2015 M235 Manual On the list for the M2 CS
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02-08-2021, 07:37 PM	#4
Tenac Brigadier General 4537 Rep 3,506 Posts Drives: All Join Date: Mar 2019 Location: AZ iTrader: (0)	Please keep us posted!! __________________ 2022 M8 Comp Convertible 2023 718 Cayman GTS 4.0 2019 718 Cayman Base 2015 M235 Manual On the list for the M2 CS
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02-08-2021, 08:25 PM	#5
raym3cs First Lieutenant 153 Rep 388 Posts Drives: San Marino M3CS Join Date: Dec 2013 Location: N-NJ iTrader: (0)	e85 will do nothing without a tune and proper gapped spark plugs (NGK) also e85 burns way faster that unleaded gasoline so if you are not using it for performance you are just burning cash
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02-09-2021, 09:59 AM	#6
hybrid_eg Captain 852 Rep 818 Posts Drives: 90 S13, 22 MSP, 23 JLUR 4xe Join Date: Apr 2006 Location: Newport Beach iTrader: (22)	yep, if you want to run e85 you should tune the car to E85 as it consumes far more fuel, furthermore you should also increase size of injectors as fuel demand is greater.. __________________ Retired: '02 E46 M3, '02 E46 M3 Vert, '11 E90 335d, '15 F10 M5, '17 F85, '18 F90, '02 E46 M3, '21 F96 Comp
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