While I think the valve cleaning, changing plugs, and general maintenance things may help, I have been on various Cobb maps myself with new plugs/coils and I have to agree that the beta 4.01 maps are choppy as were the 3.01 maps. The only map that was smooth without what I would call a hicup and then acceleration was 2.03 which felt by far the best and seemed more powerful, but also gave me limp modes if ran to hard for too long. I'm not sure what the issue with the hiccup is, but It's is disappointing.
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'15 M235xi | BSM/Oyster/Aluminum | Black Kidneys | RW Carbon Mirror Caps | 40% tint
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