[fryejeM5]

2013 M5 no mods, JB4 with BCM, 93 octane, 3rd gear pulls included for Map 1 and Map 2. Maps 1 & 3 work well but 2 pulls significantly better (when it doesn't) fail over to Map 4. What do you recommend to resolve the Map 2 failure/switching to Map 4? Will Map 5 learn and maximize boost based on fuel trims and timing or should I look to a Back End Flash to resolve the issue?

[fryejeM5]

Any Help is appreciated