Hi,
I am guessing that its a combination
of the Transistion from cold air intake
valve closing and TB's kicking in
under low rpm and the drivertrain load
in 4th gear. [low inertia]
Similar symptons can be experinced at the
''twisties'' with DBW, where pending your
driving style you get ahead of the
Stepper motor, to the point where
the engine actually starts hesitating.
Regards,
The Gorilla.
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