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Shadow007 Shadow007 is offline
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Question E85 questions...e30, e50, blah blah blah - 11-19-2014, 06:49 PM

What's going on everybody? Well to make a long story short, I recently returned back to the states after being stationed in Germany for over 5 years. During my time there, there was a lot of E85 information and post popping up all over the forums and everything I was reading about it people made it sound like it was liquid gold. At that time I wanted to jump on the e85 bandwagon but I couldn't due to Germany not having it (93 oct.) and the only place I did find was 2 hours out from where I was stationed, so that was out of the question. So during that time, I ended up buying the Coolingmist meth kit, which served it's purpose for that time. Now that I'm back there are a few e85 stations located close so now I can finally see what all the fuss was about anim:, which brings me to my multiple questions.

I was told that the stock lpfp can handle about 3-4 gallons of e85 before any problems arrive. My question is what makes the different fuel blends such as e30, e50, etc.? From my understanding, would adding 3 gallons of e85 and filling the rest with 91 or 93 octane make that blend e30 or 4 gallons of e85 make e40 or am I completely off? I was also reading that in order to go over 50% e85 I would have to get an lpfp upgrade. If I were to buy the Fuel It stage 1 upgrade, I would be able to add 7-8 gallons of e85, since we have a 15.9 gallon fuel tank, correct? So if that's true that would make e70/80 :confused2. Someone fill me in please...I WANT TO LEAAARRNNN :help:


E92 Chameleon AT 335I/ MMP Stage 3 turbos/ EOS manifold w PI/ PR Stage 3 Modular LPFP/ JB4 G5 + MHD/ BMS DCI/ BMS Cowl Filters/ BMS Sport Oil Cooler Valve/ BMS OCC/ BMS Meth Kit/MMP inlets and outlets/ER CP w/ Synaspe BOV/ M2 Exhaust/VRSF DP/ETS FMIC/ /N20TMAP/ R1 Concept Rotors and Brakes/ST V1 Coilovers/ 888Concept headlights/
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Nugs Nugs is offline
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Default 11-19-2014, 07:08 PM

Check out this
http://dbtest.net16.net/ethanol-01.html

and this
ios: https://itunes.apple.com/us/app/e85-...877131777?mt=8
android: https://play.google.com/store/apps/d...ssel.e85&hl=en
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PR3CI5N335i PR3CI5N335i is offline
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Default 11-19-2014, 08:03 PM

Basically don't run anymore than 6 gallons of E85 on your stock lpfp. 6 gallons of E85 mixed with 10 gallons of 91 gives you just under E40. E85 is 85% Ethanol so E40 is 40% Ethanol.
With the stage 1 SteveAZ Walbro 255 inline fuel pump you'll be able to run E60-70 which will get you at or slightly over 100 octane and that's enough octane to run map 7.

Use this website to calculate Ethanol percentages. Scroll to the bottom and there's a section for mixing 2 fuels. Leave E85 at 105 octane but change the pump gas to 91 (or 93 or ms109 etc). Once you punch in the numbers you'll get an Ethanol percent and an octane number.
http://www.intercepteft.com/calc.html
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RobertAZ RobertAZ is offline
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Default 11-20-2014, 09:07 AM

Quote:
Originally Posted by PR3CI5N335i
Basically don't run anymore than 6 gallons of E85 on your stock lpfp. 6 gallons of E85 mixed with 10 gallons of 91 gives you just under E40. E85 is 85% Ethanol so E40 is 40% Ethanol.
With the stage 1 SteveAZ Walbro 255 inline fuel pump you'll be able to run E60-70 which will get you at or slightly over 100 octane and that's enough octane to run map 7.

Use this website to calculate Ethanol percentages. Scroll to the bottom and there's a section for mixing 2 fuels. Leave E85 at 105 octane but change the pump gas to 91 (or 93 or ms109 etc). Once you punch in the numbers you'll get an Ethanol percent and an octane number.
http://www.intercepteft.com/calc.html
Also, depending on where you live you'll want to test the actual ethanol content of the e85 as the seasons change (in cold climates it's lower in the winter). You can buy a kit but Steve gives you one with purchase of a stg1 in-line lpfp. I have been running an in-line and ~e60 for months now and yes it is liquid gold :D


2011 (N55) e90 335i 6AT JB4 ISO + FF + BMS CAI + VRSF CP, DP & 7" FMIC + e60 + SteveAZ Stage1 LPFP + Alpina flash + Pure on Christmas wish list
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Default 11-21-2014, 01:19 PM

Quote:
Originally Posted by RobertAZ
Also, depending on where you live you'll want to test the actual ethanol content of the e85 as the seasons change (in cold climates it's lower in the winter). You can buy a kit but Steve gives you one with purchase of a stg1 in-line lpfp. I have been running an in-line and ~e60 for months now and yes it is liquid gold :D
+1

Definitely test the concentrations. Some locations can vary drastically over 20% from season to season.


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JETmn JETmn is offline
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Default 11-21-2014, 02:12 PM

Yes, in Minnesota our winter blends are usually E70 or just below. I agree with others and run no more than E35 on the stock fuel system. it is more than enough to max out my Pure turbo (N55).
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Newguy123 Newguy123 is offline
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Default 11-21-2014, 03:17 PM

they put stickers on the pumps here that say ethanol content at or above 70%


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Newguy123 Newguy123 is offline
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Default 11-24-2014, 07:57 AM

just tested my last fill up and it was 85%


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Default 11-25-2014, 06:38 PM

Ok so I'm going to need a stage 2 lpfp, at least. With the lpfp upgrade, won't I need a hpfp upgrade as well? I'm not trying to deter customers away from a product, but the reason I'm asking is that I was looking at the shotgun upgrade from VTT and details said it was people who want to run 100% e85. Would I have to buy both in order to safely use e85 or is it either one or the other? I'm still learning about e85 and I'm not trying to jump into something without having some kind of knowledge. Thanks


E92 Chameleon AT 335I/ MMP Stage 3 turbos/ EOS manifold w PI/ PR Stage 3 Modular LPFP/ JB4 G5 + MHD/ BMS DCI/ BMS Cowl Filters/ BMS Sport Oil Cooler Valve/ BMS OCC/ BMS Meth Kit/MMP inlets and outlets/ER CP w/ Synaspe BOV/ M2 Exhaust/VRSF DP/ETS FMIC/ /N20TMAP/ R1 Concept Rotors and Brakes/ST V1 Coilovers/ 888Concept headlights/
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Steve @ BMS/Fuel-It! Steve @ BMS/Fuel-It! is offline
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Default 11-25-2014, 07:48 PM

I'll try to make this simple and use general figures. YMMV based on your cars condition, mods, tune, performance, actual ethanol content, and environmental conditions.

For stock and most hybrid turbos (excluding VTT Stage 2+)
  • E0 - E30ish = Stock LPFP
  • E0 - E60ish = Stage 1 or Stage 2 LPFP
  • E0 - E85 = Stage 2 or Stage 3 LPFP + HPFP or PI upgrade (varies based on WHP)

E30, E50, E85... all refer to the actual ethanol percentage in your fuel tank.

If you are running meth, this skews those numbers and those percentages will change based on the amount and concentration of meth you are spraying.

Once you start getting in to single turbos and more power then its really best to contact us with your specs and goals.

Use one of the calculators referenced above to calculate that based on the actual percentage of ethanol your local fuel station is dispensing. When purchasing one of our kits, it comes with an ethanol tester to help you determine the actual ethanol content of your fuel source.

Does that help?

*disclaimer - these are all conservative numbers to ensure safety, YMMV



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Video of our Stage 2 LPFP upgrade installation.

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335maniac 335maniac is offline
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Default Recommended kit? - 04-19-2017, 01:14 AM

Quote:
Originally Posted by RobertAZ
Also, depending on where you live you'll want to test the actual ethanol content of the e85 as the seasons change (in cold climates it's lower in the winter). You can buy a kit but Steve gives you one with purchase of a stg1 in-line lpfp. I have been running an in-line and ~e60 for months now and yes it is liquid gold :D
Which kit would you recommend? I get most of my work done by a well known and praised mechanic that i have become friends with and will ask next time i see him but i would like to know your opinion on a good kit to check the ethanol content.
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