Hi I have a 300d Turbo that is really slow to rev until it's been reved at least once to 3k or so.

I mean when I hit the accel to the floor it takes about 15 seconds for the RPM's to get to 3k but once it hits that point it's quick every time there-after.

Weird I have to rev it once and the problems gone for the rest of the time the engine is running.

It doesn't miss or have a rough idle or any problems other than being slow to hit the 3k mark.

Any clues?

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