Thanks for that, now no one has to call! 
Quote:
Originally Posted by JFP in PA
Good luck with that; the Boxster uses one of the ABS/PSM wheel speed sensors to determine ground speed, and the instrument cluster gets that information from the DME. Considering Porsches penchant for incomprehensible logic in the DME software, you would need to reprogram the DME, which is anything but easy, even with a PIWIS. And the government gave automakers considerable leeway on instrument cluster accuracy a long time ago, which is why these cars have idiot lights that move instead of real instruments.
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Current: 2022 718 Cayman GT4, PDK bone stock (the dark side).
Former: 2003 S, 3.6 LN Nickies, ARP rod bolts, under-drive pulley, Fabspeed sport headers, Softronic tune, 987 airbox 987 motor mount, Function-First Sport motor mount insert, Ben's short shifter, Nine8Six projector headlights & center caps, ROW M030, stainless flexible brake lines, B-K rollbar extension & fire extinguisher mount, hardtop
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