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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > E85 on Cobb OTS



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      05-13-2014, 02:24 PM   #1
Johnny Boost
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E85 on Cobb OTS

Is it safe to run E85 with a Cobb OTS map? I am currently running Stage 1 aggressive. If so, what is the recommended percentage for an N55?
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      05-14-2014, 11:40 AM   #2
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I was interested in this too. Can you add a few gallons of e85 on OTS stage 1 or 2? Would there be a benefit?
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      05-14-2014, 11:46 AM   #3
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Quote:
Originally Posted by davidwarren
I was interested in this too. Can you add a few gallons of e85 on OTS stage 1 or 2? Would there be a benefit?
I ended up going 30% e85 and 93 octane for the rest. The car feels great and I'll probably take some logs this weekend.
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      05-14-2014, 11:54 AM   #4
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I think they have a OTS e85 map, but I'm running a 50/50 mix on a protune.
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      05-14-2014, 11:58 AM   #5
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Quote:
Originally Posted by Jacblack
I think they have a OTS e85 map, but I'm running a 50/50 mix on a protune.
That E85 map is made for the N54
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      05-14-2014, 12:07 PM   #6
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Well that answers that question.
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      05-14-2014, 12:24 PM   #7
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Quote:
Originally Posted by Johnny Boost View Post
Is it safe to run E85 with a Cobb OTS map? I am currently running Stage 1 aggressive. If so, what is the recommended percentage for an N55?
You can run ~30% e85 on any map no problem, but to get the full benefit of it just install map e30 specifically made for 30% e85.
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      05-14-2014, 12:51 PM   #8
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Quote:
Originally Posted by mike@x-ph.com
Quote:
Originally Posted by Johnny Boost View Post
Is it safe to run E85 with a Cobb OTS map? I am currently running Stage 1 aggressive. If so, what is the recommended percentage for an N55?
You can run ~30% e85 on any map no problem, but to get the full benefit of it just install map e30 specifically made for 30% e85.
I would like to but they don't make that map for any of the n55 DMEs. Unless you know where I can get the n55 version?
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      05-14-2014, 10:24 PM   #9
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I would suggest getting a protune for your Cobb and you could run any mix safely. PTF is doing some great work with the N55 now as well and we all know just how well they have done in the N54 scene with their protuning.
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      05-15-2014, 10:50 AM   #10
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also, correct me if i'm wrong, i think the cobb n54 ots map for running e85 assumes you are running a full bolt on car. something to keep in mind...
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      05-15-2014, 10:53 AM   #11
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Quote:
Originally Posted by jazze90
I would suggest getting a protune for your Cobb and you could run any mix safely. PTF is doing some great work with the N55 now as well and we all know just how well they have done in the N54 scene with their protuning.
Ya you're right. I will be doing a pro tune in the next couple weeks and I wanted to see how much e85 I can run until then.
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