[LGCubana]

Originally Posted by maxihari

I have Jb4 and am planning to add MHD. So that means stack it.

Though, I'm not sure how this works - can someone please explain it:

Let's say I flash MHD stage 2 (means I own stage 0 and stage 1 - along with variations)

So now, what map do I put Jb4 in? (assuming I download BEF map from MBS)
Which takes precedence?

The only stackable flash that BMS and MHD recommend is the BMS authored Backend Flash (Aka BEF), posted on N54tech: http://http://www.n54tech.com/forums...ad.php?t=43151

The MHD sourced maps are not supported by the JB4

[maxihari]

oh.. .so does that mean that I dont flash with MHD OTS maps...
but instead, there's ANOTHER map created by BMS (BEF) that ACTS like MHD sourced maps?

[Turbod]

Originally Posted by maxihari

I have Jb4 and am planning to add MHD. So that means stack it.

Though, I'm not sure how this works - can someone please explain it:

Let's say I flash MHD stage 2 (means I own stage 0 and stage 1 - along with variations)

So now, what map do I put Jb4 in? (assuming I download BEF map from MBS)
Which takes precedence?

You do not load any of the maps offered by MHD. You need to go to N54tech and download Terry's BEF maps. The JB4 will need to be on map 0 to flash and you will need to set the JB4 to 4/2. Boost targets are still set by the JB4 so depending on your mods and fueling you will select the appropriate map.

Map 0 - Allows you to use the OBD2 port for flashing.
Map 1 - 12.5 psi target. 91 - 92 octane, do not need other mods.
Map 2 - 14 psi target. Minimum 93 octane although I would want to use more.
Map 3 - Meth map 12.5 + target. User defined. Works like map 5 in adjusting if set too aggressive.
Map 4 - 8 psi target.
Map 5 - 12.5 to 18.5 psi target. Driven by avg ign value. Under 1.5 is 18.5 psi.
Map 6 - You set your own boost by every 500 rpm.
Map 7 - 18.5 psi target. Near 100 octane or E30+.
Map 8 - Wastegate open no boost.

[LGCubana]

Originally Posted by maxihari

oh.. .so does that mean that I dont flash with MHD OTS maps...
but instead, there's ANOTHER map created by BMS (BEF) that ACTS like MHD sourced maps?

MHD has two major offerings:

1. The "MHD Flasher": this (like the Cobb AP) is a conduit for transferring platform (e.g. Cobb or MHD) compatible files.

2. OTS Maps: (In an over generalized statement) similar to Cobb's OTS maps. They aren't meant to be run in tandem/stacked with the JB4. As they aren't designed to recognize the JB4's "hijacking" of the sensors that the DME is dependent upon.


You have to 3 options for the MHD platform:

1. JB4 + MHD Flasher ($199) + BMS BEF (written by BMS & posted on N54Tech)
2. MHD Flasher ($199) + MHD OTS Flash/BEF ($$$)
3. MHD Flasher ($199) + MHD Monitor Module ($69) + Custom Flash ($$$) by WedgePerformance, Buraq, Twisted Tuning, PTF,...

[MHD Tuning]

Originally Posted by maxihari

oh.. .so does that mean that I dont flash with MHD OTS maps...
but instead, there's ANOTHER map created by BMS (BEF) that ACTS like MHD sourced maps?

BMS flash + jb4 is much better than jb4 alone, but not as good as MHD OTS (flash only) in terms of smoothness.

[maxihari]

Thanks guys, made it much clearer!

[Bours]

Originally Posted by MHD Tuning

BMS flash + jb4 is much better than jb4 alone, but not as good as MHD OTS (flash only) in terms of smoothness.

Why is it better ? I think ppl mentionned the bms Bef is not really on point with a timing of 4 on pump flash compared to 10-12 withtout it ?id like to know more about this combo plz

[Turbod]

Originally Posted by Bours

Why is it better ? I think ppl mentionned the bms Bef is not really on point with a timing of 4 on pump flash compared to 10-12 withtout it ?id like to know more about this combo plz

Terry creates the JB4 BEFs, not MHD. Stacking a flash tune on a piggyback will give you more options for tuning than the piggyback alone. The pump flash is meant for pump gas. Although it didn't appear that their Cobb pump flash had timing targets the MHD one does, 4 mid range and 8 up top under full load.

More tuning control = better tune for the car.

[Johnny Boost]

Originally Posted by Turbod

Terry creates the JB4 BEFs, not MHD. Stacking a flash tune on a piggyback will give you more options for tuning than the piggyback alone. The pump flash is meant for pump gas. Although it didn't appear that their Cobb pump flash had timing targets the MHD one does, 4 mid range and 8 up top under full load.

More tuning control = better tune for the car.

Are you still running the E85 BEF? If so, how is that going?

[Turbod]

Originally Posted by Johnny Boost

Are you still running the E85 BEF? If so, how is that going?

I was running the pump flash. The JB4, downpipe, and meth are off the car for a dealer visit. I'm not sure the JB4 will be going back on the car. The BEF is still in really early development but I did not like it.

[canadarob]

I removed my jb4 and ran MHD stage 1 and 1+. I found it smoother than jb4 alone with much better throttle response.
I then re-installed my jb4 and ran the BMS backend flash + jb4. I found the throttle response just as good as the MHD OTS maps. The smoothness is almost as good as OTS and much better than JB4 alone.

For right now I can put out more power with the JB4 because:
1) stage 2 maps not out for MHD yet
2) timing is a bit more aggressive on the BEF than the OTS tunes from MHD
3) meth control (but any controller can do this of course)

I plan to keep things stacked and optimise my own BEF as every car will be different.
I will also unstack jb4 and try MHD stage 2 and 2+ when it is available. to compare to my custom maps.

Either way, both are great products individually or stacked! Keeping them stacked allows more flexibility and some extra safeties on the jb4.

[Peen]

Thanks, was waiting for a post like this. I play on keeping my JB4 as well. I want to go PI anyways with Pure Stage 2. Not sure how MHD alone would play with that. Plus I like my JB4 bluetooth.

Originally Posted by canadarob

I removed my jb4 and ran MHD stage 1 and 1+. I found it smoother than jb4 alone with much better throttle response.
I then re-installed my jb4 and ran the BMS backend flash + jb4. I found the throttle response just as good as the MHD OTS maps. The smoothness is almost as good as OTS and much better than JB4 alone.

For right now I can put out more power with the JB4 because:
1) stage 2 maps not out for MHD yet
2) timing is a bit more aggressive on the BEF than the OTS tunes from MHD
3) meth control (but any controller can do this of course)

I plan to keep things stacked and optimise my own BEF as every car will be different.
I will also unstack jb4 and try MHD stage 2 and 2+ when it is available. to compare to my custom maps.

Either way, both are great products individually or stacked! Keeping them stacked allows more flexibility and some extra safeties on the jb4.

[Turbod]

Originally Posted by Peen

I want to go PI anyways with Pure Stage 2. Not sure how MHD alone would play with that.

Assuming you plan to go with the Fuel-IT solution for PI he makes controllers for both flash and JB4.

[Johnny Boost]

I finally got around to trying out the BMS BEFs for pump and e85. WOW! I have run an E50 Cobb pro tune from PTF, JB4, and JB4+MHD. The JB4 + MHD is by far the best set up that I have used so far.

Initial thoughts:

The MHD was super easy to use and the flash process was straight forward. I am running v5.12 Test7 ISO firmware from Terry. I initially flashed the PUMP BEF with a 1/4 tank of 93 octane and put the car into map 2. With this set up, the car was pulling MUCH harder than before. It is a night and day difference. I filled the tank up with 40% e85, switched to map 5, and my tires chirped in 3rd gear when doing the autotune pulls. This is something that has never happened before. The car feels 100% smoother, more consistent, and it pulls like a freight train. The car seems to shift much smoother also.

Extras:

I wasn't sure if I would like the exhaust burble option but I ended up loving the feature. I set the duration to 1 second.

The cold start delete feature worked great as well and will come in handy in the mornings since I live in a condo.


Issues:
The only issue I experienced was with the transmission immediately following the flash. This is something that the Cobb tune did also and it's not a big deal. I did not have any idling issues or misfires.

Summary:
I am incredibly impressed by the JB4+MHD. It is a night and day difference from the JB4 alone and, in my opinion, outperforms the E50 Cobb pro tune that I had. I don't think I can go back to using the JB4 alone.

[Kevin39]

Awesome, thanks for the review. That's the route I'm hoping to go so I'm happy to hear it turned out well with the e85 maps.

[Bours]

Originally Posted by canadarob

I removed my jb4 and ran MHD stage 1 and 1+. I found it smoother than jb4 alone with much better throttle response.
I then re-installed my jb4 and ran the BMS backend flash + jb4. I found the throttle response just as good as the MHD OTS maps. The smoothness is almost as good as OTS and much better than JB4 alone.

For right now I can put out more power with the JB4 because:
1) stage 2 maps not out for MHD yet
2) timing is a bit more aggressive on the BEF than the OTS tunes from MHD
3) meth control (but any controller can do this of course)

I plan to keep things stacked and optimise my own BEF as every car will be different.
I will also unstack jb4 and try MHD stage 2 and 2+ when it is available. to compare to my custom maps.

Either way, both are great products individually or stacked! Keeping them stacked allows more flexibility and some extra safeties on the jb4.

What are your mods and octane used on the jb4 bef ? Which model is your car ? Thx for the review

[Bours]

Originally Posted by Johnny Boost

I finally got around to trying out the BMS BEFs for pump and e85. WOW! I have run an E50 Cobb pro tune from PTF, JB4, and JB4+MHD. The JB4 + MHD is by far the best set up that I have used so far.

Initial thoughts:

The MHD was super easy to use and the flash process was straight forward. I am running v5.12 Test7 ISO firmware from Terry. I initially flashed the PUMP BEF with a 1/4 tank of 93 octane and put the car into map 2. With this set up, the car was pulling MUCH harder than before. It is a night and day difference. I filled the tank up with 40% e85, switched to map 5, and my tires chirped in 3rd gear when doing the autotune pulls. This is something that has never happened before. The car feels 100% smoother, more consistent, and it pulls like a freight train. The car seems to shift much smoother also.

Extras:

I wasn't sure if I would like the exhaust burble option but I ended up loving the feature. I set the duration to 1 second.

The cold start delete feature worked great as well and will come in handy in the mornings since I live in a condo.


Issues:
The only issue I experienced was with the transmission immediately following the flash. This is something that the Cobb tune did also and it's not a big deal. I did not have any idling issues or misfires.

Summary:
I am incredibly impressed by the JB4+MHD. It is a night and day difference from the JB4 alone and, in my opinion, outperforms the E50 Cobb pro tune that I had. I don't think I can go back to using the JB4 alone.

Mind sharing a log on pump flash please ?

[DrRobert]

Originally Posted by Johnny Boost

I finally got around to trying out the BMS BEFs for pump and e85. WOW! I have run an E50 Cobb pro tune from PTF, JB4, and JB4+MHD. The JB4 + MHD is by far the best set up that I have used so far.

Initial thoughts:

The MHD was super easy to use and the flash process was straight forward. I am running v5.12 Test7 ISO firmware from Terry. I initially flashed the PUMP BEF with a 1/4 tank of 93 octane and put the car into map 2. With this set up, the car was pulling MUCH harder than before. It is a night and day difference. I filled the tank up with 40% e85, switched to map 5, and my tires chirped in 3rd gear when doing the autotune pulls. This is something that has never happened before. The car feels 100% smoother, more consistent, and it pulls like a freight train. The car seems to shift much smoother also.

Extras:

I wasn't sure if I would like the exhaust burble option but I ended up loving the feature. I set the duration to 1 second.

The cold start delete feature worked great as well and will come in handy in the mornings since I live in a condo.


Issues:
The only issue I experienced was with the transmission immediately following the flash. This is something that the Cobb tune did also and it's not a big deal. I did not have any idling issues or misfires.

Summary:
I am incredibly impressed by the JB4+MHD. It is a night and day difference from the JB4 alone and, in my opinion, outperforms the E50 Cobb pro tune that I had. I don't think I can go back to using the JB4 alone.

I would be interested in knowing how the JB4+MHD BEF compared to flash only with MHD stage 2 OTS maps. Any plans on giving that a try?

[Johnny Boost]

Originally Posted by DrRobert

I would be interested in knowing how the JB4+MHD BEF compared to flash only with MHD stage 2 OTS maps. Any plans on giving that a try?

I don't know about the OTS maps but I'm sure a custom tune from Wedge would run just as strong, if not stronger.

[Johnny Boost]

Originally Posted by Bours

Mind sharing a log on pump flash please ?

Here are a couple logs that I took today. I sent them to Terry for his feedback. I am running the E85 BEF.

http://datazap.me/u/johnny-boost/111...0&data=1-3-4-5

http://datazap.me/u/johnny-boost/111316?log=1&data=1-4

[Mikaeldarer]

Originally Posted by DrRobert

I would be interested in knowing how the JB4+MHD BEF compared to flash only with MHD stage 2 OTS maps. Any plans on giving that a try?

I was PS1/FBO running JB4 E85 BEF until this morning. I removed JB4 and brought ethanol level down to around E25 before flashing the MHD Stage 2+ OTS.

First impression, car is running slightly smoother than it did with BEF while driving casually. But there is a noticeable difference in power during WOT in favor of the JB4 BEF.

I will see where I can get with a custom tune or the E30 OTS once released for now but will probably go back to JB4 BEF at some point

[DrRobert]

Originally Posted by Mikaeldarer

I was PS1/FBO running JB4 E85 BEF until this morning. I removed JB4 and brought ethanol level down to around E25 before flashing the MHD Stage 2+ OTS.

First impression, car is running slightly smoother than it did with BEF while driving casually. But there is a noticeable difference in power during WOT in favor of the JB4 BEF.

I will see where I can get with a custom tune or the E30 OTS once released for now but will probably go back to JB4 BEF at some point

I don't have JB4 but I have PS2 and flashed to MHD Stage 2+ yesterday - I too felt it was real smooth around town but it crapped out on me on WOT. I'm proceeding directly to a custom MHD tune ASAP but remain interested in knowing if JB4+MHD BEF would be any better, especially for N55s with upgraded turbos.