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Power loss on acceleration

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I have a 1999, 996 Cab Tip and find that under heavy acceleration the power delivery is not smooth. Best way to describe it is almost missing but not quite. It does accelerate pretty quick but seems to hold back and be a little "fluffy".

Seems to be the same in either auto or tiptronic mode.

It is due for service in November and I can live with it till then as long as the problem isn't causing any other issues.

Starts and runs fine, hot or cold, under normal driving. Just when I give it some beans.

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I had the same problem on my 99. After initial startup the car would be fluffy and feel like it wasnt getting enough gas when I would take off. Since then my CEl came on and the dealer replaced the MAF sensor and all things were perfect. About 2 weeks later it started back up though. Im not sure what to do. I will admit that i have only been running 91 octane because i cant find 93 around here.


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