Speedometer accuracy
Thread Starter
Joined: Mar 2006
Posts: 4,668
Likes: 5
From: Central Kentucky
Speedometer accuracy First off the MPH on my Scanmaster and my GPS are perfectly in sync, no issue at all there. Its the needle that starts to read a little low at higher speeds, usually over 60MPH.
At 30MPH on the Scanmaster, the needle shows 30 and the same thing at 55. Once you hit 60 and higher, the needle starts to fall a little behind. So at 75MPH on the Scanmaster, the needle reads 72MPH.
Is there a parameter in the tune that can keep the needle more in sync with the MPH reading in the PCM?
At 30MPH on the Scanmaster, the needle shows 30 and the same thing at 55. Once you hit 60 and higher, the needle starts to fall a little behind. So at 75MPH on the Scanmaster, the needle reads 72MPH.
Is there a parameter in the tune that can keep the needle more in sync with the MPH reading in the PCM?
I believe its a computerized mechanical reading from the VSS (vehicle speed sensor) in the tailshaft of the tranny (if a4 not sure of location on m6)
As far as i know there isnt any way to recalibrate it
As far as i know there isnt any way to recalibrate it
