Anyone Running Av Fuel?

HiRev335i · 02-17-2018, 01:18 PM

Hi is anyone running Av fuel (aviation fuel) in there cars? Reside in Canada and do not have access to e85 although I do live where I can buy aviation fuel that is 100 octane that is quite reasonable in price from a small local airport. I am tuned with a Jb4 G5, DCI, 5" stepped intercooler, BMW Performance Exhaust. Still on OE catted down pipes and was concerned about frying those or possibly O2 sensors, I believe the internals of the engine and injectors can handle the increase in octane? Your thoughts and insight please. Thanks

RocketSurgeon · 02-17-2018, 03:12 PM

Don't run aviation fuel! That fuel has lead in it which can foul up cats, O2 sensors, etc. The octane rating of aviation fuel is calculated differently, so the fuel is more like 96 octane gasoline.
I'd hate to find out what leaded fuel would do to those injectors and HPFP, that could get terribly expensive.
If you can't get e85, consider a meth kit. I strongly suggest tuning conservatively, I'd much rather leave a few HP on the table than toast an engine.

Christian87n · 02-18-2018, 02:41 AM

I second this. The engines won’t be happy running 100LL.

snedanator · 02-18-2018, 08:19 AM

If you have access to bio ethanol fuel for fires , u can use that. :-)

HiRev335i · 02-18-2018, 02:20 PM

Thanks for all the info guys!

02-17-2018, 01:18 PM	#1
HiRev335i Private First Class 46 Rep 117 Posts Drives: 09 E92 335i sport pkg Join Date: Jun 2017 Location: Canada iTrader: (0)	Anyone Running Av Fuel? Hi is anyone running Av fuel (aviation fuel) in there cars? Reside in Canada and do not have access to e85 although I do live where I can buy aviation fuel that is 100 octane that is quite reasonable in price from a small local airport. I am tuned with a Jb4 G5, DCI, 5" stepped intercooler, BMW Performance Exhaust. Still on OE catted down pipes and was concerned about frying those or possibly O2 sensors, I believe the internals of the engine and injectors can handle the increase in octane? Your thoughts and insight please. Thanks
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02-17-2018, 03:12 PM	#2
RocketSurgeon Lieutenant 263 Rep 459 Posts Drives: 2008 135i Manual, CBR650F Join Date: Jan 2017 Location: NC iTrader: (0)	Don't run aviation fuel! That fuel has lead in it which can foul up cats, O2 sensors, etc. The octane rating of aviation fuel is calculated differently, so the fuel is more like 96 octane gasoline. I'd hate to find out what leaded fuel would do to those injectors and HPFP, that could get terribly expensive. If you can't get e85, consider a meth kit. I strongly suggest tuning conservatively, I'd much rather leave a few HP on the table than toast an engine.
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02-18-2018, 02:41 AM	#3
Christian87n Private 5 Rep 47 Posts Drives: 2012 BSM 335is DCT Join Date: Dec 2015 Location: San Antonio/Houston iTrader: (2)	I second this. The engines won’t be happy running 100LL.
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02-18-2018, 08:19 AM	#4
snedanator Lieutenant 96 Rep 551 Posts Drives: e93 335i le mans blue Join Date: Jul 2015 Location: Falkirk . Scotland iTrader: (0)	If you have access to bio ethanol fuel for fires , u can use that. :-)
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02-18-2018, 02:20 PM	#5
HiRev335i Private First Class 46 Rep 117 Posts Drives: 09 E92 335i sport pkg Join Date: Jun 2017 Location: Canada iTrader: (0)	Thanks for all the info guys!
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