E85 with JB4?

B58SP · 01-21-2019, 08:56 AM

Newbie question here, trying to see if i can squeeze any worthy power gains from my (already maxed out?) set up. I am currently running JB4, intake, catless downpipe. I usually run map 2, 3 or 5 but noticed map 2 is probably the smoothest and most linear. Is there a map which supports partial E85 (say if I want to throw in 2-3 gallons)? And if so, is this reccommended/worth it? I have not heard of anyone doing this when I searched.

B58 · 01-21-2019, 09:21 AM

I ran map 5 with 3 gallons of E85
https://f30.bimmerpost.com/forums/sh....php?t=1550613

B58SP · 01-21-2019, 10:22 AM

Quote:

Originally Posted by B58

I ran map 5 with 3 gallons of E85
https://f30.bimmerpost.com/forums/sh....php?t=1550613

Nice, I do notice you say catless and map 5 with e85 can cause throttle closures? I might just try it since I have e85 close to me. I just dont want to blow anything up wanted to make sure it was safe. Maybe map 2/3 and e85 will also work?

jrdoming · 01-21-2019, 12:13 PM

The challenge with e85 and a piggyback tune without a back end flash is it lowers the overall power of the fuel. This means that while it raises octane it can result in an overall lower boost target due to fuel trims. People have had some success with limited amounts of E85 though.

B58togo · 01-21-2019, 12:20 PM

I tried running a couple gallons mixed with the rest 93 and tried Map 5. It did seem a bit smoother and slightly more powerful than Map 3 on straight 93, but it could have just been in my head.

B58 · 01-21-2019, 12:22 PM

Quote:

Originally Posted by B58SP

Nice, I do notice you say catless and map 5 with e85 can cause throttle closures? I might just try it since I have e85 close to me. I just dont want to blow anything up wanted to make sure it was safe. Maybe map 2/3 and e85 will also work?

Map 3 and 5 are the same both boost +6psi and map 5 probably makes 1-2* more timing if even that lol. Some cars have throttle closures some don't, but it seems like the catless dp b58's have the throttle closure more. You can just run map 3 and wait for the back-end flash coming out some time "early 2019" and hope you can safely run more E85. Dump in 2 gallons of e85 and enjoy the car as is.

B58SP · 01-21-2019, 01:04 PM

Quote:

Originally Posted by B58

Quote:

Originally Posted by B58SP

Nice, I do notice you say catless and map 5 with e85 can cause throttle closures? I might just try it since I have e85 close to me. I just dont want to blow anything up wanted to make sure it was safe. Maybe map 2/3 and e85 will also work?

Map 3 and 5 are the same both boost +6psi and map 5 probably makes 1-2* more timing if even that lol. Some cars have throttle closures some don't, but it seems like the catless dp b58's have the throttle closure more. You can just run map 3 and wait for the back-end flash coming out some time "early 2019" and hope you can safely run more E85. Dump in 2 gallons of e85 and enjoy the car as is.

I thought they had already released back end flash for b58 no?

B58 · 01-21-2019, 01:47 PM

Quote:

Originally Posted by B58SP

I thought they had already released back end flash for b58 no?

Probably other tuners have, but MHD is making one strictly for JB4 users and Terry/BMS will make different maps most likely to go with the back-end flash.

B58SP · 01-21-2019, 02:18 PM

Quote:

Originally Posted by B58

Quote:

Originally Posted by B58SP

I thought they had already released back end flash for b58 no?

Probably other tuners have, but MHD is making one strictly for JB4 users and Terry/BMS will make different maps most likely to go with the back-end flash.

I like MHD on the N54 so looking forward to it. Wonder what the price point will be

B58togo · 01-21-2019, 04:02 PM

^^

Terry said whatever the license cost is. $79 or something? Updated maps will be free of course.

G.Newt · 01-21-2019, 04:44 PM

Quote:

Originally Posted by B58

Probably other tuners have, but MHD is making one strictly for JB4 users and Terry/BMS will make different maps most likely to go with the back-end flash.

The real benefit of MHD is local custom tuning. Sure, it'll be new for a bit, but an experienced tuner should be fine. Tunes are relatively cheap, cars/engines aren't.

B58SP · 01-21-2019, 05:36 PM

Quote:

Originally Posted by B58togo

^^

Terry said whatever the license cost is. $79 or something? Updated maps will be free of course.

Im assuming you meant $799 and not $79 lol

B58togo · 01-21-2019, 08:03 PM

No, they charge $79 for the BEF license and then current JB4 owners get the maps for free through BMS. Read through this MHD user guide for the N54.

http://mhdtuning.com/downloads/MHD%2...ER%20GUIDE.pdf

This is why I was patiently waiting for MHD. (To spend $79 vs an $1100 Mission tune) But now, with the gains I'm seeing on the Stage 2+ ECU and Stage 2 TCU, I'm rapidly losing patience with MHD.

B58 · 01-22-2019, 11:23 AM

Quote:

Originally Posted by B58togo

No, they charge $79 for the BEF license and then current JB4 owners get the maps for free through BMS. Read through this MHD user guide for the N54.

http://mhdtuning.com/downloads/MHD%2...ER%20GUIDE.pdf

This is why I was patiently waiting for MHD. (To spend $79 vs an $1100 Mission tune) But now, with the gains I'm seeing on the Stage 2+ ECU and Stage 2 TCU, I'm rapidly losing patience with MHD.

I spoke to Terry about the BEF through email. I would wait.... trust me. Mission Performance has finally stepped up their game and the gains look great, but JB4 is not too far behind with a BEF.

B58togo · 01-22-2019, 11:54 AM

We'll see. Car is mostly sitting till April, but once the weather gets nice, I'll have to make a move.

B58 · 01-22-2019, 12:03 PM

Quote:

Originally Posted by B58togo

We'll see. Car is mostly sitting till April, but once the weather gets nice, I'll have to make a move.

I think well be B58togo by April.... hopefully because they said 'early 2019' lol

B58togo · 01-22-2019, 12:06 PM

Soon it'll turn into mid 2019, then late 2019, then early 2020......

B58 · 01-22-2019, 12:27 PM

Quote:

Originally Posted by B58togo

Soon it'll turn into mid 2019, then late 2019, then early 2020......

Yeah i know

01-21-2019, 08:56 AM	#1
B58SP Second Lieutenant 219 Rep 272 Posts Drives: 2017 M240i SOLD Join Date: Jul 2018 Location: NY/NJ iTrader: (0)	E85 with JB4? Newbie question here, trying to see if i can squeeze any worthy power gains from my (already maxed out?) set up. I am currently running JB4, intake, catless downpipe. I usually run map 2, 3 or 5 but noticed map 2 is probably the smoothest and most linear. Is there a map which supports partial E85 (say if I want to throw in 2-3 gallons)? And if so, is this reccommended/worth it? I have not heard of anyone doing this when I searched.
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01-21-2019, 09:21 AM	#2
B58 Major 558 Rep 1,456 Posts Drives: 922 Turbo Join Date: May 2018 Location: USA iTrader: (1)	I ran map 5 with 3 gallons of E85 https://f30.bimmerpost.com/forums/sh....php?t=1550613 __________________ 2024 X3 M40i 2014 BMW M5
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01-21-2019, 12:13 PM	#4
jrdoming Private First Class 34 Rep 124 Posts Drives: 2017 340i M-Sport Join Date: Dec 2012 Location: North Carolina iTrader: (2) Garage List 2017 BMW 340i [0.00]	The challenge with e85 and a piggyback tune without a back end flash is it lowers the overall power of the fuel. This means that while it raises octane it can result in an overall lower boost target due to fuel trims. People have had some success with limited amounts of E85 though.
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01-21-2019, 12:20 PM	#5
B58togo Major 807 Rep 1,368 Posts Drives: M240i Join Date: Feb 2017 Location: NY iTrader: (0)	I tried running a couple gallons mixed with the rest 93 and tried Map 5. It did seem a bit smoother and slightly more powerful than Map 3 on straight 93, but it could have just been in my head. __________________ 2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ Pure 800 cast/ DS2/ E40 Doug Newton tuned/ ER catless DP/ Remus axle back/ BMS intake/ FTP CP/ M Performance LSD
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01-21-2019, 04:02 PM	#10
B58togo Major 807 Rep 1,368 Posts Drives: M240i Join Date: Feb 2017 Location: NY iTrader: (0)	^^ Terry said whatever the license cost is. $79 or something? Updated maps will be free of course. __________________ 2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ Pure 800 cast/ DS2/ E40 Doug Newton tuned/ ER catless DP/ Remus axle back/ BMS intake/ FTP CP/ M Performance LSD
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01-21-2019, 08:03 PM	#13
B58togo Major 807 Rep 1,368 Posts Drives: M240i Join Date: Feb 2017 Location: NY iTrader: (0)	No, they charge $79 for the BEF license and then current JB4 owners get the maps for free through BMS. Read through this MHD user guide for the N54. http://mhdtuning.com/downloads/MHD%2...ER%20GUIDE.pdf This is why I was patiently waiting for MHD. (To spend $79 vs an $1100 Mission tune) But now, with the gains I'm seeing on the Stage 2+ ECU and Stage 2 TCU, I'm rapidly losing patience with MHD. __________________ 2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ Pure 800 cast/ DS2/ E40 Doug Newton tuned/ ER catless DP/ Remus axle back/ BMS intake/ FTP CP/ M Performance LSD Last edited by B58togo; 01-21-2019 at 08:10 PM..
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01-22-2019, 11:54 AM	#15
B58togo Major 807 Rep 1,368 Posts Drives: M240i Join Date: Feb 2017 Location: NY iTrader: (0)	We'll see. Car is mostly sitting till April, but once the weather gets nice, I'll have to make a move. __________________ 2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ Pure 800 cast/ DS2/ E40 Doug Newton tuned/ ER catless DP/ Remus axle back/ BMS intake/ FTP CP/ M Performance LSD
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01-22-2019, 12:06 PM	#17
B58togo Major 807 Rep 1,368 Posts Drives: M240i Join Date: Feb 2017 Location: NY iTrader: (0)	Soon it'll turn into mid 2019, then late 2019, then early 2020...... __________________ 2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ Pure 800 cast/ DS2/ E40 Doug Newton tuned/ ER catless DP/ Remus axle back/ BMS intake/ FTP CP/ M Performance LSD
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