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romnation romnation is offline
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Default Does the tune need to be removed to do an ECU firmware update? - 08-12-2019, 01:55 PM

I currently run an MHD back end flash + JB4. Does some or all of this need to removed before updating the factory ECU firmware?
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Default 08-12-2019, 06:15 PM

Not sure I follow- are you referring to your stock file?

If yes, JB4 would need to be in map 0



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romnation romnation is offline
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Default 08-12-2019, 06:22 PM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
Not sure I follow- are you referring to your stock file?

If yes, JB4 would need to be in map 0
Correct, the stock file for the DME. I currently run the MHD backend flash for jb4 (The e85 flash) Will these need to be removed as well?

After the car's firmware upgrade will I need to reapply the mhd back end flash?
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Default 08-13-2019, 09:53 PM

After car is flashed - yes you’ll want to reflash the bef



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