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E90 M335i E90 M335i is offline
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Default S63TU JB4 + backend flash - 09-22-2020, 08:51 AM

Hi everyone. I have a 14' M6 runing a stage 2 BM3 tune and had a great experience running JB4 on previous cars. Love the features the JB4 gives and the ability to data log and have the monitors so easily. So i was wondering if anybody here is running it with a backend flash and how do they like it (compared to BM3 or other tunes)? If so who's done the backend flash for you?

Thank you for any ideas!
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Default 09-22-2020, 03:00 PM

The JB4 is a great fine tuning tool for flashed cars, useful for on the fly boost changes, boost by gear, easy logging to your phone, addl safety systems, etc.


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E90 M335i E90 M335i is offline
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Default 09-22-2020, 03:51 PM

Yes, that's why I love it and my experience with it on the N54 platform was amazing. I just wanna know more about the backend flashes as you don't offer that for the S63tu like the N54. Who should I go for to get the backend flash? I know from a few guys that jb4 alone on the s63tu tends to max out the trims quick because of the fuel system.
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E90 M335i E90 M335i is offline
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Default 10-12-2020, 12:38 AM

Any advice?
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luchocamp luchocamp is offline
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Default 10-12-2020, 06:50 PM

JB4 works well with stock or flashed ecu.
DME, MHD, BM3, SMS, etc ...



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E90 M335i E90 M335i is offline
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Default 10-12-2020, 08:06 PM

Oh ok. I guess its not like the N54 where you had to have a backend flash to run the JB4 too..
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