BMW M3 and BMW M4 Forum - View Single Post - How To: FREE Full E85 Flash Tune w/ BMS + BM3

Fuel-It! · 09-22-2019, 07:59 PM

The JB4 BEF maps allow a lot more performance than is possible JB4 only and gives you custom flash tune like performance with lots of extra features and safety systems provided by the JB4.

09-22-2019, 07:59 PM	#6
Fuel-It! Banned 550 Rep 949 Posts Drives: M4, M5, M2C, X4M, 440i, etc... Join Date: Mar 2019 Location: Phoenix AZ iTrader: (0)	The JB4 BEF maps allow a lot more performance than is possible JB4 only and gives you custom flash tune like performance with lots of extra features and safety systems provided by the JB4.
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