More ado about the 996 speedo - Page 3 - Rennlist - Porsche Discussion Forums

Notices
996 Forum
Sponsored by:
Sponsored by: LN Engineering

More ado about the 996 speedo

Old 07-09-2013, 01:51 PM
  #31  
Dennis C
Rocky Mountain High
Rennlist Member
 
Dennis C's Avatar
 
Join Date: Aug 2007
Location: Evergreen, Colorado
Posts: 14,014
Default

My 996 speedo reads 3 - 4 mph slower than the speed indicated on my GPS or on radar speed-limit signs. My Cayenne always matches the GPS and the sign readings.
Dennis C is offline  
Old 07-09-2013, 06:59 PM
  #32  
golftime
User
 
golftime's Avatar
 
Join Date: Apr 2012
Location: Central PA
Posts: 216
Default

I think most of us would prefer accuracy across the board. I know years ago, speedo shops that tested police vehicles would simply change a gear in the tranny to adjust the speed if it was off, but obviously everything is based on electronics now.
golftime is offline  
Old 07-11-2013, 03:29 AM
  #33  
perryinva
User
 
perryinva's Avatar
 
Join Date: Jan 2008
Location: Richmond, VA
Posts: 1,134
Default

My BMWs, Mini, and 996 all read higher by 3-4MPH than what is actual. Verified with GPS and mile markers. My Ford & Dodge are accurate.
perryinva is offline  
Old 07-11-2013, 12:04 PM
  #34  
wyovino
Addict
Rennlist Member
 
wyovino's Avatar
 
Join Date: Jun 2010
Posts: 2,076
Default

In the "Things you didn't know about the 996" thread, there are conversations about this issue. The consensus is that the offset (~3 mph) was a Porsche decision to comply with German laws that forbid under-reporting of speed, and this can't be adjusted. You can find the unadjusted speed (in KPH only) on MK-I cars through the Climate Control display.
wyovino is online now  
Old 07-11-2013, 01:06 PM
  #35  
nick49
User
 
nick49's Avatar
 
Join Date: Apr 2006
Location: Out West
Posts: 1,967
Default

Possibly a little known fact here is that the accuracy of the speedo can tweeked by the dealer to make it accurate. This was a topic of discussion in '97 or '98 on PPBB the Boxster forum. I had my '99 Boxster at the dealer while still under warranty and had them adjust it. I then checked it against my GPS and it was 100%.
I never did my C2 or the Turbo.
nick49 is offline  
Old 07-03-2014, 03:52 PM
  #36  
odurandina
Slayer of Economic Optimism

Rennlist Member
 
odurandina's Avatar
 
Join Date: Oct 2009
Location: one thousand, five hundred miles north of Ft. Lauderdale for the summer.
Posts: 27,241
Default

can anyone tell me how much of a wet dream is the idea of a 200 mph gps speedo

seated in it's proper place inside a 996 guage cluster?

I've got a nice one available from speed hut, but it would complicate things,

as it would have to switch positions with the tachometer to do it.

not exactly what I had in mind.

Last edited by odurandina; 07-03-2014 at 08:49 PM.
odurandina is offline  


Thread Tools
Search this Thread
Quick Reply: More ado about the 996 speedo


Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: