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981 Forum Discussions of the 3rd Gen Boxster and 2nd Gen Cayman (2012-2016)

Lumpy acceleration

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Old Mar 23, 2021 | 05:42 PM
  #16  
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cjrhoades
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From: Indiana
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Originally Posted by darreldore
For the last 2-3 months I have been experiencing this lumpy acceleration in my 2013 3.4 Boxster especially in the 2500 to 3000 RPM range when the car is in a higher gear and under the load, like 6 or 7 (PDK). No doubt the fact that I have been making short trips primarily during the 2020 year of COVID-19.
I am going to take the advice of putting Techron in the tank and going on back roads where I can really do some acceleration and warm the engine up and hopefully burn out the lumpiness like previous owners seem to have done according to this thread.
I will report my results!
I think what you may be experiencing is the variocam changeover. It can be quite abrupt in these cars at part throttle. At least, that's been my experience in my 2.7 981 manual. Every time I come to a hill in high gear with the cruise on the engine will surge and the exhaust note changes as it comes under load to maintain speed.
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