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jotoole · 08-24-2010, 02:08 PM

The speedometer on my 2000 base boxster with 17" wheels matches dead on with my Garmin gps speedometer other than a couple second time lag when changing speed.

Of course, they may both be off.

08-24-2010, 02:08 PM	#21
jotoole Registered User Join Date: Oct 2008 Location: sw ohio Posts: 253	speedometer The speedometer on my 2000 base boxster with 17" wheels matches dead on with my Garmin gps speedometer other than a couple second time lag when changing speed. Of course, they may both be off.