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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 > benefits of getting cobb flash with jb4 G5 when mixing e85:91?



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      11-20-2012, 05:03 AM   #1
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benefits of getting cobb flash with jb4 G5 when mixing e85:91?

Just wondering what are the benefits of getting the cobb flash with jb4 G5 when mixing e85:91 50/50? I see a lot of people run without the cobb flash and do 50/50 e85:91 and have great gains and some people here say you need the cobb flash..
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      11-20-2012, 06:46 AM   #2
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It's all a guessing game at this point until you actually mix some in and we see logs to assist you.

One particular car can run E60 w/o a flash mix while another one can only run E30, the variance is pretty substantially on these cars.
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      11-20-2012, 07:43 AM   #3
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Quote:
Originally Posted by spool twice View Post
It's all a guessing game at this point until you actually mix some in and we see logs to assist you.

One particular car can run E60 w/o a flash mix while another one can only run E30, the variance is pretty substantially on these cars.
Could also be attributed to difference in E85 quality. Some stations actually have E90 while others have E70.
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      11-20-2012, 07:46 AM   #4
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2008 BMW 135i  [0.00]
California 91 crap-gas user here.

50% E85 & 50% 91 OCTANE SHELL/CHEVRON MIX running the Cobb OTS E-30 MAP.

Dyno'd a few weeks back made 380WHP & 420WFT/LBs.

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      11-20-2012, 11:23 AM   #5
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If you have a Cobb AP you can load the BMS flash. It features more advance, VANOS tweaks, fueling tweaks, and some other stuff that benefit those running HB4 w/ E85 mixtures of 50% or more.

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      11-20-2012, 11:27 AM   #6
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Quote:
Originally Posted by sparkyblue View Post
California 91 crap-gas user here.

50% E85 & 50% 91 OCTANE SHELL/CHEVRON MIX running the Cobb OTS E-30 MAP.

Dyno'd a few weeks back made 380WHP & 420WFT/LBs.



your post has nothing to do with what the OP asked at all
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      11-20-2012, 02:08 PM   #7
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
If you have a Cobb AP you can load the BMS flash. It features more advance, VANOS tweaks, fueling tweaks, and some other stuff that benefit those running HB4 w/ E85 mixtures of 50% or more.

Mike
a bit off topic, but mike, is there any big difference in the G4 to G5 boards for someone who isnt running upped turbos. Just on map 5 with 3 gallons of e85 mixed with 91?
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      11-20-2012, 06:25 PM   #8
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Originally Posted by Hisam135i View Post
a bit off topic, but mike, is there any big difference in the G4 to G5 boards for someone who isnt running upped turbos. Just on map 5 with 3 gallons of e85 mixed with 91?
+1 I'm.curious as well..
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      11-20-2012, 07:59 PM   #9
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+1 I'm.curious as well..
LOL mike help!!!
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