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Ken 335ia's Avatar
Ken 335ia Ken 335ia is offline
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Default Can I install jb4 still having tuner flash in the car - 12-29-2017, 07:29 AM

Hey
I just received my jb4, I want to install it now
instead of waiting to get my stock map back, from the local tuner
that set up the car to 0.8bar boost.

I could just wait, but don't want to.

Will he be able to flash back oem map via OBD, if I put in the jb4 box?
I will of cause run in map 0 on jb4 until my tuner is back from vacation next week ?
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MHD MHD is offline
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Default 01-02-2018, 07:20 AM

Use MHD and flash back to stock yourself. But much better, flash a proper DME flash, in your case a backend from BMS.
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Ken 335ia Ken 335ia is offline
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Default 01-02-2018, 09:09 AM

Thanks for the input.
I waited. Today my Local tuner flashed the car back
To std.

Tomorrow i Will install Jb4 ����
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LessIsMore LessIsMore is offline
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Default 01-02-2018, 10:35 AM

Agree with MHD - once the JB4 is on, flash the appropriate MHD back-end flash for JB4 compatibility. Then contact David Trebila (trebila on this forum).

JB4 automatically goes into map 0 when a cable is plugged into the OBDII port, so the JB4 shouldn't ever interfere with ability to flash the DME . You can manually place the car in map 0 with steering wheel controls or interface, if you wanted to be double-sure.


2017 AMG C63 - JB4 - 11.69 @ 127 (dragy)
2009 BMW 535i - 548 whp - sold
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Ken 335ia Ken 335ia is offline
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Default 01-02-2018, 11:16 AM

Thanks :-)Yes i mailed with David about Working
On my car
I Will get back to him when the Jb4 is in the car
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LessIsMore LessIsMore is offline
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Default 01-02-2018, 11:30 AM

sounds good OP - good luck!


2017 AMG C63 - JB4 - 11.69 @ 127 (dragy)
2009 BMW 535i - 548 whp - sold
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