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MNBoxster · 09-19-2006, 07:11 PM

Hi,

Well, factor in the well-known Porsche Safety Factor (+3-5MPH) speedometer reading and the car is really going only 145-148MPH. Only the Climate Control display, in diagnostic mode, will display true speed (in KPH).

Add to this that the car has already reached it's Peak HP and it's not going to go any faster. The Fuel tank reads 3/4, and we don't know if there is a headwind/tailwind, an incline/decline, a passenger load, though the Top does appear to be UP, so 149MPH sounds about right under optimal conditions...

Happy Motoring!... Jim'99

09-19-2006, 07:11 PM	#5
MNBoxster Registered User Join Date: Sep 2005 Location: Minneapolis/St. Paul, Minnesota, USA Posts: 3,308	Hi, Well, factor in the well-known Porsche Safety Factor (+3-5MPH) speedometer reading and the car is really going only 145-148MPH. Only the Climate Control display, in diagnostic mode, will display true speed (in KPH). Add to this that the car has already reached it's Peak HP and it's not going to go any faster. The Fuel tank reads 3/4, and we don't know if there is a headwind/tailwind, an incline/decline, a passenger load, though the Top does appear to be UP, so 149MPH sounds about right under optimal conditions... Happy Motoring!... Jim'99 Last edited by MNBoxster; 09-19-2006 at 08:24 PM.