After the disappointing results on the rolling road I was advised by a fellow forum member to check the ignition coils for any cracks or damage as this had been a cause of reduced power for him.
An ignition coil is an induction coil that transform the low voltage from the battery to the high voltage needed for the spark plugs. On the Boxster these are exposed to the elements so it’s prudent to check them for hairline cracks. As it’s very little additional effort and because spark plugs are cheap I’ll replace all six whilst I’m there.
My video of it all is here:
https://youtu.be/H25qLssQNxg
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