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Old 05-05-2013, 02:17 PM   #2
thstone
Certified Boxster Addict
 
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
Your car has the original Variocam which works via a solenoid which changes the tension on the timing chain to alter the valve timing to give more power at high RPM. As such, it is either on or off based on a pre-set RPM controlled by the DME.

Your problem could be Variocam related but high RPM drivability can also be fuel related (fuel filter, fuel pump, or injectors not flowing enough fuel at high RPM).
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1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
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