N54Tech.com - International Turbo Racing Discussion
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chrisrav95 chrisrav95 is offline
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Join Date: Jan 2019
Car: 2011 e92 335i
Default Finally updating JB4 after 5 years - backend flash? - 01-09-2019, 10:49 AM

Hello,

So I've been running my JB4 for close to 5 years now. I needed to take it out about a week ago to troubleshoot some issues I was having. I believe I solved those by cleaning the CanBus Wires but I figured while the JB4 was out this would be a good time to do some much needed updates and possibly a backend flash. My JB4 has never been upgraded to the ISO firmware and I believe that is where I will start but I am also interesting in learning more about flash tunes that could accompany my JB4.

I haven't been all that active on any of the forums for the past few years and I see that flash options have come a long way since the JB4 was first introduced. I have read up a bit on the MHD flash which many people seem to love. There are some aspects of this tune that I would like to add to my vehicle. Mainly I would like to remove the speed limiter and also add the exhaust burbles. Can I run this MHD stage 2 flash tune with my JB4 installed? Is this different from a "backend flash" tune?

If the MHD can not be ran simultaneously with my JB4 what would be my next best option? Would I still be able to remove my speed limiter and add the exhaust burbles? Also I would assume that I should update my JB4 to the latest ISO before proceeding with any kind of flash tune.

My car:
2011 e92 335i xdrive
BMS Air Intake
BMS ******* ********
Vishnu Chargepipe
AE Exhaust
NO Meth/E85
Car is a daily driver and I would like to keep it as reliable and safe as possible.
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Payam @ BMS's Avatar
Payam @ BMS Payam @ BMS is offline
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Posts: 4,720
Join Date: Oct 2013
Car: e90 335i
Default 01-10-2019, 10:29 AM

You can stack MHD and JB4 for best of both worlds.

Read this for MHD maps and stacking:

E Chassis N55 MHD Back End Flash Maps - N54Tech.com - International Turbo Racing Discussion

And this for updating your JB4 firmware:

E Chassis N55 JB4 - N54Tech.com - International Turbo Racing Discussion


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