04-12-2008, 08:32 PM
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#1
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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I suggest you buy a $200 GPS and use it as a speedo.
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1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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04-12-2008, 08:33 PM
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#2
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Registered User
Join Date: Aug 2007
Location: New Jersey
Posts: 691
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Quote:
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Originally Posted by Paul
I suggest you buy a $200 GPS and use it as a speedo.
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Ha! Good advice, but I'm too cheap to ever buy a GPS.
I'm looking for more of a low tech "Zen" solution -- being more aware/connected with the car.
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SOLD - 2002 Boxster S - PSM, Litronics, De-ambered, Bird Bike Rack, Hardtop, RMS leak...
Last edited by fatmike; 04-12-2008 at 08:36 PM.
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04-12-2008, 08:50 PM
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#3
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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OK then, just subtract 4 mph like the rest of us. 69 is really 65, etc.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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04-12-2008, 09:06 PM
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#4
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Registered User
Join Date: Feb 2008
Location: Louisiana
Posts: 70
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Quote:
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Originally Posted by Paul
OK then, just subtract 4 mph like the rest of us. 69 is really 65, etc.
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the digital speedometer is incorrect?
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04-12-2008, 09:10 PM
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#5
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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The odometer is correct, both the digital and analog speedos read about 4 mph high anywhere above 20 mph.
Borrow a GPS to verify.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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04-13-2008, 05:31 AM
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#6
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Registered User
Join Date: Sep 2006
Location: Omaha
Posts: 2,953
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The 3-4 mph "safety factor" has been discussed about 986s, but is it also built into 987s? I haven't had my new one long enough to discover on my own. I live in Omaha and who needs GPS in Omaha? I'd assume Porsche built the "safety factor" into 987s but varification here would be better than finding out via law enforcement that it's not.
__________________
GPRPCA Chief Driving Instructor
2008 Boxster S Limited Edition #005
2008 Cayman S Sport - Signal Green
1989 928 S4 5 spd - black
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04-13-2008, 12:26 PM
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#7
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Registered User
Join Date: Aug 2007
Location: New Jersey
Posts: 691
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I'm more precise than subtracting 4 MPH (or so). Drives me nuts. I want to set my cruise control at certain places on the highway at very precise speeds. For example in certain spots -- 73 is OK, 76 is not.
Maybe someone with a Garmin can post their speed at 3K RPMs in 3rd gear? (We'd need to know "S" or not & also your tire size). How fast is 3K RPM in 6th? Anyone?
__________________
SOLD - 2002 Boxster S - PSM, Litronics, De-ambered, Bird Bike Rack, Hardtop, RMS leak...
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