In my opinion its best not to accelerate in such low rpms and in such a high gear, the csl has rather sharp camshafts and it in general doesnt like that. In my opinion its best to not go below 3000RPM for hard accelerations.
If it still happens on moderate acceleration then it sounds like the Vanos is not up to speed. If you have DIS you can carry out a Vanos test and go from there.
Re the flap, the car works the same with flap removed. If at all, it is slightly more prone to hesitate under those circumstances. I have proven in the past that the flaps sole reason is to meet EU noise emissions.
It was added in the last minute by BMW. The car was designed without a flap in place.
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Greetings, Julian.
Last edited by select; 05-05-2018 at 03:25 AM.
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