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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 no flex fuel wires



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      06-20-2014, 10:56 AM   #1
Schmidty335i
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E85 no flex fuel wires

Good morning probably should have asked this question before i did it but... from reading the forums i kinda got the impression that you could run like 3 gallons of e85 with a full tank of 91oct without flex fuel wires. so i eventually decided to give it a shot. put it the jb4 in map 5 and holy crap does it move! i was very supprised at the diff! now i wanna get the flex fuel wires installed and add more e85!
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      06-20-2014, 12:20 PM   #2
marCOCOpuffs
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What's your question?
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      06-20-2014, 12:57 PM   #3
Schmidty335i
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Quote:
Originally Posted by marCOCOpuffs View Post
What's your question?
its not as much of a question, but a statment for anyone that was wondering like i was. from the forums i read i figured it would work but wasnt 100% so i figured i would share my experince with anyone else that was thinking of doing the same.
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      06-20-2014, 02:18 PM   #4
JETmn
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Up to E20 is safe to run without the FF wires, after that you should be using them. Remember when figuring your E ratio that the gas you are using is probably E10 to start with, depending on the state.
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      06-20-2014, 02:48 PM   #5
Schmidty335i
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Quote:
Originally Posted by JETmn View Post
Up to E20 is safe to run without the FF wires, after that you should be using them. Remember when figuring your E ratio that the gas you are using is probably E10 to start with, depending on the state.
JETmn what is the best way to figure out what E level i am at? i am very new to the whole aspect of E85 fuel.
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      06-20-2014, 03:03 PM   #6
shadow191
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There are calculators like this

http://www.intercepteft.com/calc.html

Should give you a rough idea of what it takes to get to E20.
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      06-20-2014, 04:18 PM   #7
JETmn
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Actual calculations aren't too hard either.

((Qty gas * % ethanol) + (Qty gas * % ethanol))/total amount of gas

Basically you are adding up how much ethanol and you divide by the total amount in the tank.
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      06-21-2014, 08:23 AM   #8
Schmidty335i
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Awesome! thanks for the info guys.
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