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Old 02-13-2011, 07:02 AM   #1
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Join Date: Oct 2010
Location: Delta Charlie
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First road trip.

Ran up to Harrisburg PA from Northern VA, USA with my wife.
250 mi RT.

Velvet.

It is occassionally stalling at lights. MAF a good suspect?

And I can't believe I forgot to deal with this:

I changed the wheels from 18" to 17" (snows).

I only noticed the speedo discrepancy when I was finally able to power a GPS.
The speedo is fast by about 5-6 MPH. Which will be throwing off the OC,
ODO, etc etc.

Is there a user reset? Or must it be done by a tech?
Is it electronic, IE a menu selection, or is there a little gear set that
has to be installed somewhere?

Gracias!
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Old 02-13-2011, 09:02 AM   #2
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Quote:
Originally Posted by eltren
Ran up to Harrisburg PA from Northern VA, USA with my wife.
250 mi RT.

Velvet.

It is occassionally stalling at lights. MAF a good suspect?

And I can't believe I forgot to deal with this:

I changed the wheels from 18" to 17" (snows).

I only noticed the speedo discrepancy when I was finally able to power a GPS.
The speedo is fast by about 5-6 MPH. Which will be throwing off the OC,
ODO, etc etc.

Is there a user reset? Or must it be done by a tech?
Is it electronic, IE a menu selection, or is there a little gear set that
has to be installed somewhere?

Gracias!
i know it sounds counterintuitive, but the speedometer being off doesnt affect the other things - odometer, tripometer, etc. just something "quirky" you lean to deal with - "no sweetie, i'm not really going 90, the speedometer is wrong..."
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Old 02-13-2011, 12:47 PM   #3
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Location: New Paltz, NY 12561
Posts: 935
Tony is right on the money with the speedometer discrepancy. Most if not all read higher than the actual speed you are traveling. Porsche did this on purpose so not to worry. Have fun with the car and DRIVE it!!!

AKL
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