Yeah I get this too- from day one. "Twitchy" is how I would describe it. Above 3k purrs along just fine, but, warm or cold, below 3k in 1st, 2nd or 3rd, it's a slight bucking. The only explanation I've been able to find it it's due to the "drive by wire"- there is so much power and this engine is so high strung it want to go full throttle. Light throttle and you feel every little adjustment. Curious too if anyone else has this, or a better diagnosis.
2011.5 LeMans Blue e92 DCT, ZCP, European Delivery. Edition Grilles, Reflector delete, Rear Fogs Enabled, Encore Innovation Exhaust, LUX Angel Eyes, 255x285's, Dinan 3.45 Rear. "Last of the V-8 Interceptors, a real piece of history..."