Question about 2002 Porsche 911
Most cars are designed to be overoptimistic by about 5-10%, this heps to keep the speeding fines less. If you want to calibrate it, your Porsche dealer should be able to refer you to a reputable supplier / dealer in car electronics. It shouldn't cost more than about 250 dollars to do - and you get a dyno print-out to boot!
Posted on Jun 18, 2009
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Posted on Jan 02, 2017
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