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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > E85 or methanol kit



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      10-29-2012, 11:38 AM   #1
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E85 or methanol kit

I'm debating which one to use... Methanol or e85? I have a jb4 and I'm running on map 5 cause we only have 91 pump here...
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      10-29-2012, 11:43 AM   #2
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if you have E85 pumps near you i would first try that. u need to mix it though, you cant run it straight. start with E30 and see how the car likes it on map 5
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      10-29-2012, 11:45 AM   #3
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      10-29-2012, 12:11 PM   #4
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Quote:
Originally Posted by enrita View Post
if you have E85 pumps near you i would first try that. u need to mix it though, you cant run it straight. start with E30 and see how the car likes it on map 5
What's a safe mixture that does not ruin the fuel lines?
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      10-29-2012, 12:11 PM   #5
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bolth
Haha
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      10-29-2012, 12:13 PM   #6
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Quote:
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What's a safe mixture that does not ruin the fuel lines?
the problem is not the fuel lines but your lpfp wont be able to push enough fuel. so start with E30 or E40.
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      10-29-2012, 12:16 PM   #7
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Quote:
Originally Posted by enrita View Post
the problem is not the fuel lines but your lpfp wont be able to push enough fuel. so start with E30 or E40.
Sorry man, I'm new here. What e30 or e40 mean?
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      10-29-2012, 12:20 PM   #8
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That basically means the mix of e85 with gas. The more gas the lower the content of E85. E30 is basically 30% ethanol and 70% gas
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      10-29-2012, 12:25 PM   #9
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I would start with E30 or E40 as enrita said. Mixing in ethanol will provide more gains than methanol injection. Add meth and you get IAT cooling
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      10-29-2012, 12:26 PM   #10
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That basically means the mix of e85 with gas. The more gas the lower the content of E85. E30 is basically 30% ethanol and 70% gas
Oh i see, thanks man
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      10-29-2012, 12:28 PM   #11
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Quote:
Originally Posted by enrita View Post
the problem is not the fuel lines but your lpfp wont be able to push enough fuel. so start with E30 or E40.
Can 335 fuel pump handle e30 or e40 safely on map 5
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      10-29-2012, 12:30 PM   #12
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Quote:
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Can 335 fuel pump handle e30 or e40 safely on map 5
yes otherwise i wouldnt have written it...
There are 2 pumps , High (HPFP) and low pressure (LPFP)
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      10-29-2012, 12:39 PM   #13
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I would start with E30 if you are going to try an ethanol mix. My 335 was maxed on fuel trims with a JB4, map 5 and E30.
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      10-29-2012, 12:42 PM   #14
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Quote:
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I would start with E30 if you are going to try an ethanol mix. My 335 was maxed on fuel trims with a JB4, map 5 and E30.
Yeah mine for example leans out after 6k on E50 and trims shoots to 34%. Low fuel pressure drops there from 72psi to 50psi. gonna soon upgrade the lpfp with the Walbro E85
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      10-29-2012, 12:50 PM   #15
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Quote:
Originally Posted by enrita View Post
yes otherwise i wouldnt have written it...
There are 2 pumps , High (HPFP) and low pressure (LPFP)
Okay I will try e40 then today.... To be safe, should I change lphp?
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      10-29-2012, 12:52 PM   #16
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Quote:
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I would start with E30 if you are going to try an ethanol mix. My 335 was maxed on fuel trims with a JB4, map 5 and E30.
What do you mean maxed on fuel trim ?
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      10-29-2012, 12:54 PM   #17
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Quote:
Originally Posted by enrita View Post
Yeah mine for example leans out after 6k on E50 and trims shoots to 34%. Low fuel pressure drops there from 72psi to 50psi. gonna soon upgrade the lpfp with the Walbro E85
I will just put 30% e85 and 70% 91 pump to be on the safe side
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      10-29-2012, 12:56 PM   #18
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Quote:
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I will just put 30% e85 and 70% 91 pump to be on the safe side
http://www.intercepteft.com/calc.html
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      10-29-2012, 12:57 PM   #19
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Quote:
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What do you mean maxed on fuel trim ?
you got a lot of searching and learning to do
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      10-29-2012, 01:15 PM   #20
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my best time tune dci only on 93 was 13.33
I went to e85 40% mix and ran 12.43 at 112

so I'd say e85 ftw
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      10-29-2012, 01:46 PM   #21
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you got a lot of searching and learning to do
I do know that... But we all start learning from somewhere.
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      10-29-2012, 01:46 PM   #22
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Quote:
Originally Posted by smi1gj View Post
my best time tune dci only on 93 was 13.33
I went to e85 40% mix and ran 12.43 at 112

so I'd say e85 ftw
Damn nice numbers
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