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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 > Best jb4 map for e85/91 mix



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      11-08-2012, 05:32 PM   #1
bmw335idizzle
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Best jb4 map for e85/91 mix

Just wondering which jb4 map is best to use for max whp gains when running e85/91 mix. I'm thinking of 70/30 91:ethanol. I keep seeing people run all types of maps but which one is best?
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      11-08-2012, 06:01 PM   #2
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I run map 5 on my 93/E85 mix of about 1/3 E85. Pulls strong.
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      11-08-2012, 08:47 PM   #3
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Quote:
Originally Posted by GetSomeE92 View Post
I run map 5 on my 93/E85 mix of about 1/3 E85. Pulls strong.
+1
running dci, jb4, 40% e85 on map 5. Make sure you have the latest firmware and your golden.
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      11-08-2012, 09:16 PM   #4
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good info 123
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      11-08-2012, 09:19 PM   #5
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agree with above, I run 30 e 85 and 70 93 on the newest firmware which seems loads better for ethanol. Map 5 does great
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      11-08-2012, 10:30 PM   #6
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any new firmware updates for jb4?
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      11-09-2012, 10:51 AM   #7
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I run Map5 also and I've been running 50/50 E85/93 for about 6 months with no problems... every update just keeps getting better, I'm currently on the G5 ISO 11C and its great! Then when I want another extra kick, I switch over to Map3
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      11-09-2012, 10:57 AM   #8
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Quote:
Originally Posted by GTstunna612 View Post
any new firmware updates for jb4?
not right now.....seems as tho Terry is working on the G5 mostly right now. But he did state that any new firmware for the G5 that can be used on the JB4 will be passed down.
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      11-09-2012, 03:00 PM   #9
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Looks like map 5 is the best way to go. How do I download the latest firmware?
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      11-09-2012, 03:00 PM   #10
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Quote:
Originally Posted by GetSomeE92 View Post
I run map 5 on my 93/E85 mix of about 1/3 E85. Pulls strong.
How much whp are you pulling
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      11-09-2012, 03:01 PM   #11
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Quote:
Originally Posted by 07bmw335iguy View Post
agree with above, I run 30 e 85 and 70 93 on the newest firmware which seems loads better for ethanol. Map 5 does great
How much whp are you pulling
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      11-09-2012, 06:39 PM   #12
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Quote:
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How much whp are you pulling
No idea. But the butt dyno tells me that it feels just as strong, if not stronger, as the car did when I ran it at the 1/4 mile track on 100 octane, on older JB4 firmware. I ran a 12.519 @ 112.77 on that day (really hot in humid, mid summer in south Florida).
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      11-09-2012, 07:37 PM   #13
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Quote:
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How much whp are you pulling
I run same 1:3 E85:93oct mix with only JB4, DCI and Catless DPs, hit 400whp/420tq.
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      11-10-2012, 01:03 AM   #14
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Quote:
Originally Posted by bigdaddycane View Post
not right now.....seems as tho Terry is working on the G5 mostly right now. But he did state that any new firmware for the G5 that can be used on the JB4 will be passed down.
thx, how do I download the latest updates I have the jb4 with the usb cable but don't really know how to download the new file updates and transfer to jb4...
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      11-12-2012, 10:29 AM   #15
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Quote:
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thx, how do I download the latest updates I have the jb4 with the usb cable but don't really know how to download the new file updates and transfer to jb4...
Bump
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      11-12-2012, 11:29 AM   #16
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Upload firmware and select the hex file you downloaded from n54tech.
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      11-13-2012, 12:31 AM   #17
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Upload firmware and select the hex file you downloaded from n54tech.
thx will give it a shot
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      11-13-2012, 01:01 AM   #18
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Map 5 is weak compared to map 2 when running around 6.5 gallons of E-85. I've tested both and map 2 is the stronger map.
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      11-14-2012, 12:27 PM   #19
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Quote:
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Map 5 is weak compared to map 2 when running around 6.5 gallons of E-85. I've tested both and map 2 is the stronger map.
I see people say this but the dyno proved otherwise for me.
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