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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 with jb+



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      06-02-2012, 11:17 AM   #1
medvec04
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E85 with jb+

Hi guys I was wondering if I could run e85 with just a jb+? with all the talk about it I wanna try some out. Thanks
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      06-02-2012, 12:27 PM   #2
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No. Get a real tune.
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      06-02-2012, 12:32 PM   #3
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^wow says someone with a piggyback...
You an run some E85 with no tune if you want, ou just may not see any gains.
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      06-02-2012, 12:50 PM   #4
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Quote:
Originally Posted by Bmw135er View Post
^wow says someone with a piggyback...


As far as the jb+ and e85 goes, you won't see any increase in power unless you're having serious timing corrections. But there's no real way to log the jb+ so you don't know if you have any timing corrections to correct.
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      06-02-2012, 12:50 PM   #5
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You need to apply timing when using E85, which the JB+ doesn't do.
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      06-02-2012, 01:09 PM   #6
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You can run it but you won't see any gains.
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      06-02-2012, 01:24 PM   #7
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i think he will still see gains, e85 would act like octane booster, youll feel the difference. it may not be comparable to jb4 map 5 auto-tune but your car should feel peppier.

Last edited by idrift4wd; 06-02-2012 at 01:49 PM..
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      06-02-2012, 03:11 PM   #8
medvec04
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Ok cool thanks guys. And on The jb4 u can adjust timing?
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      06-02-2012, 03:22 PM   #9
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If you run the JB at 100% with E85 it should run pretty good.
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      06-03-2012, 01:48 AM   #10
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Quote:
Originally Posted by Bmw135er View Post
^wow says someone with a piggyback...
You an run some E85 with no tune if you want, ou just may not see any gains.
Not sure where you're going with that, comparing a "piggyback" with a glorified resistor in a box.
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      06-03-2012, 07:04 PM   #11
MilehighM3
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That's pretty much what a piggyback is. With the addition of rheostats and transistors. Signal modifiers are not tunes, they fool the dme into doing what is desired by the user/tuner.
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      06-03-2012, 07:08 PM   #12
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Quote:
Originally Posted by Bmw135er View Post
That's pretty much what a piggyback is. With the addition of rheostats and transistors. Signal modifiers are not tunes, they fool the dme into doing what is desired by the user/tuner.
You are arguing the most pointless thing ever, who cares? They both achieve the exact same thing, just go about it a different way.
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