2003 A4 3.0 Speed limiting in ECU
04-13-2005, 07:04 AM
#71
Guest
Posts: n/a
Re: 2003 A4 3.0 Speed limiting in ECU
I actually like this 'feature', as I tend to drive around about 10 mph
higher than the posted speed limits, which generally the police will
let you have - so in the case of the Audi, an indicated 10 mph over is
really more like 7 mph over, which is better for the driver's
license....
Dan D
Central NJ USA
higher than the posted speed limits, which generally the police will
let you have - so in the case of the Audi, an indicated 10 mph over is
really more like 7 mph over, which is better for the driver's
license....
Dan D
Central NJ USA
04-13-2005, 07:04 AM
#72
Guest
Posts: n/a
Re: 2003 A4 3.0 Speed limiting in ECU
I actually like this 'feature', as I tend to drive around about 10 mph
higher than the posted speed limits, which generally the police will
let you have - so in the case of the Audi, an indicated 10 mph over is
really more like 7 mph over, which is better for the driver's
license....
Dan D
Central NJ USA
higher than the posted speed limits, which generally the police will
let you have - so in the case of the Audi, an indicated 10 mph over is
really more like 7 mph over, which is better for the driver's
license....
Dan D
Central NJ USA
04-13-2005, 07:04 AM
#73
Guest
Posts: n/a
Re: 2003 A4 3.0 Speed limiting in ECU
I actually like this 'feature', as I tend to drive around about 10 mph
higher than the posted speed limits, which generally the police will
let you have - so in the case of the Audi, an indicated 10 mph over is
really more like 7 mph over, which is better for the driver's
license....
Dan D
Central NJ USA
higher than the posted speed limits, which generally the police will
let you have - so in the case of the Audi, an indicated 10 mph over is
really more like 7 mph over, which is better for the driver's
license....
Dan D
Central NJ USA
04-13-2005, 01:24 PM
#74
Guest
Posts: n/a
Re: 2003 A4 3.0 Speed limiting in ECU
On Tue, 12 Apr 2005, Mike Smith wrote:
> Audis and VWs are designed to show a higher than actual speed on the
> speedo. The ECU knows the real speed (to within the accuracy permitted
> by variations in tire size due to wear, etc.) and there's a trick you
> can do with the Climatronic to get it to show the true speed. (On the
> Passat, it's fan-down, temp-down, and Econ all at the same time, then
> use temp-up to reach option 16 - don't know if it's the same on an A4.)
> I recently did this on my Passat and found that the difference was
> about 3-4 MPH at 50.
I have checked the speedo in both my A4 (2002) and Passat (1995) by timing
the interval between mile markers on the highway at a constant speed
(65mph). Both were within 1mph of the calculated result.
Steve
04-13-2005, 01:24 PM
#75
Guest
Posts: n/a
Re: 2003 A4 3.0 Speed limiting in ECU
On Tue, 12 Apr 2005, Mike Smith wrote:
> Audis and VWs are designed to show a higher than actual speed on the
> speedo. The ECU knows the real speed (to within the accuracy permitted
> by variations in tire size due to wear, etc.) and there's a trick you
> can do with the Climatronic to get it to show the true speed. (On the
> Passat, it's fan-down, temp-down, and Econ all at the same time, then
> use temp-up to reach option 16 - don't know if it's the same on an A4.)
> I recently did this on my Passat and found that the difference was
> about 3-4 MPH at 50.
I have checked the speedo in both my A4 (2002) and Passat (1995) by timing
the interval between mile markers on the highway at a constant speed
(65mph). Both were within 1mph of the calculated result.
Steve
04-13-2005, 01:24 PM
#76
Guest
Posts: n/a
Re: 2003 A4 3.0 Speed limiting in ECU
On Tue, 12 Apr 2005, Mike Smith wrote:
> Audis and VWs are designed to show a higher than actual speed on the
> speedo. The ECU knows the real speed (to within the accuracy permitted
> by variations in tire size due to wear, etc.) and there's a trick you
> can do with the Climatronic to get it to show the true speed. (On the
> Passat, it's fan-down, temp-down, and Econ all at the same time, then
> use temp-up to reach option 16 - don't know if it's the same on an A4.)
> I recently did this on my Passat and found that the difference was
> about 3-4 MPH at 50.
I have checked the speedo in both my A4 (2002) and Passat (1995) by timing
the interval between mile markers on the highway at a constant speed
(65mph). Both were within 1mph of the calculated result.
Steve
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