How can I run 100% e85?

aren93 · 11-22-2014, 03:38 PM

How can I run 100% e85? What would I need to upgrade

Johnny Boost · 11-22-2014, 04:34 PM

I'm not sure that anyone is doing this with the N55 yet. I know that you need a backend flash and an inline fuel pump upgrade in order to do it on the N54.

1cleann55 · 11-22-2014, 06:04 PM

Quote:

Originally Posted by aren93

How can I run 100% e85? What would I need to upgrade

Buy vargas upgrade HPFP and you'll be able to run 100% E85

aren93 · 11-22-2014, 07:54 PM

Quote:

Originally Posted by 1cleann55

Buy vargas upgrade HPFP and you'll be able to run 100% E85

Thanks I'll look into this.

aren93 · 11-22-2014, 08:34 PM

Quote:

Originally Posted by 1cleann55

Buy vargas upgrade HPFP and you'll be able to run 100% E85

Is there any benefit to getting the double barrel?

4lss · 11-22-2014, 10:15 PM

First time running it today. All you need is jb4 + ff wires AFAIK. Car pulls a lot harder. Worth it!

aren93 · 11-22-2014, 10:19 PM

Quote:

Originally Posted by djfellipe

First time running it today. All you need is jb4 + ff wires AFAIK. Car pulls a lot harder. Worth it!

I have JB4 and FF wires but I can only run up to 40% e85 and 60 % 91.

N0Chill 335i · 11-23-2014, 12:02 AM

Why do you want to run 100%? It's been proven already that you don't make any more power after 70% on stock turbos. You would need as mentioned above all new aftermarket turbos to run 100% AND make more power.

4lss · 11-23-2014, 10:22 AM

Quote:

Originally Posted by aren93

I have JB4 and FF wires but I can only run up to 40% e85 and 60 % 91.

I stand corrected. Didn't read the post correctly.
You do need a couple more things to run 100%, but I believe it's not recommended.

tke344 · 11-23-2014, 11:13 AM

From an octane standpoint it seems anything more than 50% ethanol is not necessary. On the stock LPFP I've had good results running about 40% ethanol and targeting a lean AFR. Around 13.5 tapering to 13:1 at the top end. When I was running mid 11:1's AFR the car was not happy, I'd experience what seemed like a misfire but I think it was really a failsafe for low fuel pressure, I believe I was overworking the LPFP. This is with a custom Cobb tune, but a JB4 with FF wires shouldn't be much different.

Jeef · 11-23-2014, 09:27 PM

E85 for no headache mixes. Unless you have an ethanol sensor I would much rather be tuned for e85. You will need an upgraded lpfp and can run either vtt Hpfp upgrade or motiv's fuel rail. You will also need some way to tune for it.

divisionbell77 · 11-24-2014, 08:01 AM

Quote:

Originally Posted by djfellipe

First time running it today. All you need is jb4 + ff wires AFAIK. Car pulls a lot harder. Worth it!

I hope you didn't put 100% E85 into your car with just JB4 and FF wires...........

4lss · 11-24-2014, 08:46 AM

Quote:

Originally Posted by divisionbell77

I hope you didn't put 100% E85 into your car with just JB4 and FF wires...........

Got me 4 gallons of e85 and topped off with 93.

JETmn · 11-24-2014, 10:16 AM

Quote:

Originally Posted by Jeef

E85 for no headache mixes. Unless you have an ethanol sensor I would much rather be tuned for e85. You will need an upgraded lpfp and can run either vtt Hpfp upgrade or motiv's fuel rail. You will also need some way to tune for it.

That would be true if all E85 was actually E85. It can vary drastically from one station to the next. It can also change depending on the price between ethanol and 87 oct.

Jeef · 11-24-2014, 03:17 PM

Quote:

Originally Posted by JETmn

Quote:

Originally Posted by Jeef

E85 for no headache mixes. Unless you have an ethanol sensor I would much rather be tuned for e85. You will need an upgraded lpfp and can run either vtt Hpfp upgrade or motiv's fuel rail. You will also need some way to tune for it.

That would be true if all E85 was actually E85. It can vary drastically from one station to the next. It can also change depending on the price between ethanol and 87 oct.

Get a test kit. Problem solved. And people usually tune for e70 for head room of ethanol variation. Where I live I haven't had a problem with anything lower than e83.

Johnny Boost · 11-24-2014, 03:47 PM

Quote:

Originally Posted by aren93

How can I run 100% e85? What would I need to upgrade

Hey Aren. I did a little research on this. You will need one of the LPFP upgrades found here:

Stage 1
http://www.fuel-it.biz/e-series-stag...grade-options/

or

Stage 2
http://www.fuel-it.biz/e-series-stag...grade-options/

And you will also need a back-end flash map from Terry@BMS. You would need to use a Cobb AP to load the map.

aren93 · 11-24-2014, 06:55 PM

Quote:

Originally Posted by Johnny Boost

Hey Aren. I did a little research on this. You will need one of the LPFP upgrades found here:

Stage 1
http://www.fuel-it.biz/e-series-stag...grade-options/

or

Stage 2
http://www.fuel-it.biz/e-series-stag...grade-options/

And you will also need a back-end flash map from Terry@BMS. You would need to use a Cobb AP to load the map.

Really? It's only $210? Lol I gotta buy the Cobb AP too so there's another like $900. Why is the Vargas HPFP so expensive though?

Jeef · 11-25-2014, 12:19 AM

Quote:

Originally Posted by aren93

Really? It's only $210? Lol I gotta buy the Cobb AP too so there's another like $900. Why is the Vargas HPFP so expensive though?

just get a v2?

JETmn · 11-25-2014, 01:01 PM

Quote:

Originally Posted by aren93

Really? It's only $210? Lol I gotta buy the Cobb AP too so there's another like $900. Why is the Vargas HPFP so expensive though?

LPFP ike the fuel it is used in almost every car. The HPFP is specific to our car, so not much for options out there. There is a port injection system too that just came out from Motiv (pretty sure it was them).

paradoxical3 · 11-25-2014, 01:13 PM

Lot of misinformation here, even with a lpfp you can't run 100% e85. We need a hpfp upgrade, and the only one I know of is the in-development Vargas Shotgun.

Jeef · 11-25-2014, 02:56 PM

Quote:

Originally Posted by paradoxical3

Lot of misinformation here, even with a lpfp you can't run 100% e85. We need a hpfp upgrade, and the only one I know of is the in-development Vargas Shotgun.

read post #11.

Subaru335i · 11-25-2014, 04:56 PM

Quote:

Originally Posted by paradoxical3

Lot of misinformation here, even with a lpfp you can't run 100% e85. We need a hpfp upgrade, and the only one I know of is the in-development Vargas Shotgun.

Not true. With the stock turbo flowing less than the N54's and with our newer HPFP most people don't have a problem with 100% E85 on the N55.
It seems like people just don't really see a benefit to using 100% E85 without a turbo upgrade which would bump up power enough where the stock HPFP might have trouble keeping up.

11-22-2014, 03:38 PM	#1
aren93 First Lieutenant 34 Rep 394 Posts Drives: 2012 335i M Sport Join Date: Sep 2014 Location: Los Angeles iTrader: (2)	How can I run 100% e85? How can I run 100% e85? What would I need to upgrade __________________ MHD- VRSF Catless Downpipe - VRSF Charge Pipe - VRSF 7" FMIC - aFe Intake - Alpina Flash - Pure Stage 2 - Pure Inlet - Fuel it! PI - Fuel it! Stage 2 LPFP - N20 3.5bar Tmap sensor - N20 spark plugs -
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11-22-2014, 04:34 PM	#2
Johnny Boost Colonel 324 Rep 2,014 Posts Drives: '21 M850i GC Join Date: May 2013 Location: TBD iTrader: (0)	I'm not sure that anyone is doing this with the N55 yet. I know that you need a backend flash and an inline fuel pump upgrade in order to do it on the N54. __________________ WedgePerformance E40 MHD \| Performance Exhaust Mod \| BMS DP \| Vibrant 1790 \| BMS Intake \| VRSF CP \| xHP Stage 3 Michelin PSS \| M3 Control Arms LUX v4 LEDs \| Shadowline Grills \| Lip Spoiler
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11-22-2014, 10:15 PM	#6
4lss Private First Class 17 Rep 103 Posts Drives: 2014 F30 335i xDrive M-Sport Join Date: Jun 2014 Location: Marietta, GA iTrader: (0)	First time running it today. All you need is jb4 + ff wires AFAIK. Car pulls a lot harder. Worth it!
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11-23-2014, 12:02 AM	#8
N0Chill 335i Colonel 848 Rep 2,771 Posts Drives: 13' F30 335i M Sport AW Join Date: Nov 2011 Location: MD iTrader: (2)	Why do you want to run 100%? It's been proven already that you don't make any more power after 70% on stock turbos. You would need as mentioned above all new aftermarket turbos to run 100% AND make more power.
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11-23-2014, 11:13 AM	#10
tke344 Lieutenant 38 Rep 463 Posts Drives: f15 X5 50i Join Date: Jan 2009 Location: Charlotte iTrader: (1)	From an octane standpoint it seems anything more than 50% ethanol is not necessary. On the stock LPFP I've had good results running about 40% ethanol and targeting a lean AFR. Around 13.5 tapering to 13:1 at the top end. When I was running mid 11:1's AFR the car was not happy, I'd experience what seemed like a misfire but I think it was really a failsafe for low fuel pressure, I believe I was overworking the LPFP. This is with a custom Cobb tune, but a JB4 with FF wires shouldn't be much different.
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11-23-2014, 09:27 PM	#11
Jeef Lieutenant Colonel 388 Rep 1,945 Posts Drives: AW E92 335i Join Date: Nov 2008 Location: San Diego, CA iTrader: (6)	E85 for no headache mixes. Unless you have an ethanol sensor I would much rather be tuned for e85. You will need an upgraded lpfp and can run either vtt Hpfp upgrade or motiv's fuel rail. You will also need some way to tune for it.
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11-25-2014, 01:13 PM	#20
paradoxical3 Lieutenant Colonel 1008 Rep 1,563 Posts Drives: BMW Join Date: Mar 2012 Location: USA iTrader: (6)	Lot of misinformation here, even with a lpfp you can't run 100% e85. We need a hpfp upgrade, and the only one I know of is the in-development Vargas Shotgun.
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