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Live Values - What to record for hesitation?

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2009 C2S 101K miles


I posted here a long time ago about hesitation I get around 2800 - 3000 RPM when accelerating mildly.  Others have this but not all and it appears to be with our 2009 cars (although I've read it happens with other of the DFI years).  When I installed my Sharkwerks x pipe, I even hear a slight Pssht like a waste gate.  The car has done this consistently in my 75K miles of ownership and never threw a code.  My dealer experienced it, didn't know what it was, said there was no TSB, and "keep an eye on it".  great.  A Porsche tech on the PCA site suggested it is the variable lift and a flap in the intake triggering together.


Jeff: you suggested it may be a "lazy actuator" back then.  So now, I connected with a few folks who have this issue and have the Durametric software so now we want to get to the bottom of this..

So some Durametric questions:

1 - What in Live Values should we be checking for?

2 - What is the sampling rate in the software we should select?

3 - Any other tips for gathering Live Values


I suspect we will trigger the software "on", right before we invoke the hesitation, and then "off" immediately after.  I've done this before for tracking temps and such and the darn thing collects tons of samples fast.


Any tips would be appreciated.


Bonus question... any instructions out there on how to change these actuators?  There is one on each bank and located next to a spark plug hole and appear easy to replace when doing plugs.



Bruce in Philly

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