Speed governor/limiter (EU)

[npole]

So i knew the speed governor (limiter) for the EU version was set to 263 Km/h with a sw update happened last year, but I didn't had an opportunity to test it out... until recently.
The strange part is that it effectively reached 263.5 km/h until it cut out (5th gear) but that was the read speed with an external device (GPS), while the speedo was showing 273 km/h.
That puzzled me, isn't the governor connected to the measured speed? How did it managed to reach 273 Km/h? It wasn't downhill or such, but flat road and the car had plenty of room to go faster eventually.

(stock Bullitt)

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[WildHorse]

Don't rely on a GPS. Want accuracy ? V=D/T.

 

[npole]

Don't rely on a GPS. Want accuracy ? S=D/T.

I don't care about GPS (it was just a coincidence, that it shown the real "declared" speed).. I'm more curious about the speedometer reading 273. If it's limited to 263, it should never have reached that speed.
So with a recent updated they increased the top speed further.. or the governor is calculating the speed in a different way.

 

[WildHorse]

I'm more curious about the speedometer reading 273.

Don't rely on a speedometer. Want accuracy ? V=D/T.

 

[npole]

Don't rely on a speedometer. Want accuracy ? V=D/T.

How do you think the electronic set in to cut the engine while reaching the set top speed? By reading the distance travelled by magic?

 

[WildHorse]

How do you think the electronic set in to cut the engine while reaching the set top speed? By reading the distance travelled by magic?

Tire pressure/Tire growth/weather/irregular roads can all cause the speedo to be off. That tried and true formula will be more accurate, than the speedo/GPS/Speed radar.

 

[npole]

Tire pressure/Tire growth/weather/irregular roads can all cause the speedo to be off. That tried and true formula will be more accurate, than the speedo/GPS/Speed radar.

I know how and why the speedometer is/could read the wrong speed, but I've asked: "How do you think the electronic set in to cut the engine while reaching the set top speed? "

 

[WildHorse]

How do you think the electronic set in to cut the engine while reaching the set top speed? "

Logical conclusion would be the speedo is reading incorrectly. To prove it, I told you twice how to.

 

[npole]

Logical conclusion would be the speedo is reading incorrectly. To prove it, I told you twice how to.

So, the electronic (the governor) is reading the speed from, comes from somewhere else than the one shown on the speedo? Hence my first post question: "isn't the governor connected to the measured speed?" (that wouldn't make much sense IMO, the only speed read/shown by a vehicle is calculated by the set wheel diameter and the rotation speed).

 

[WildHorse]

So, the electronic (the governor) is reading the speed from, comes from somewhere else than the one shown on the speedo? Hence my first post question: "isn't the governor connected to the measured speed?" (that wouldn't make much sense IMO, the only speed read/shown by a vehicle is calculated by the set wheel diameter and the rotation speed).

No in the speedo itself, could be some resistant's values are out during it sweep, etc., etc. Or you could just have a car that does 270+ what the hell do I know ?

 

[npole]

No in the speedo itself, could be some resistant's values are out during it sweep, etc., etc. Or you could just have a car that does 270+ what the hell do I know ?

Then we just wasted ten posts with you not knowing what the hell is going on... OK.

To everyone else: does anyone know if there's effectively a speed governor and how is set? I mean does anyone managed to hit it and check the speed shown on the speedometer?

 

[WildHorse]

Then we just wasted ten posts with you not knowing what the hell is going on... OK.

Sub'd for the replies.

 

[Michael_vroomvroom]

So i knew the speed governor (limiter) for the EU version was set to 263 Km/h with a sw update happened last year, but I didn't had an opportunity to test it out... until recently.
The strange part is that it effectively reached 263.5 km/h until it cut out (5th gear) but that was the read speed with an external device (GPS), while the speedo was showing 273 km/h.
That puzzled me, isn't the governor connected to the measured speed? How did it managed to reach 273 Km/h? It wasn't downhill or such, but flat road and the car had plenty of room to go faster eventually.

(stock Bullitt)

I agree that sounds strange.. I looked through my copy of the work shop manual, but could not find any information indicating the speed limiter gets it's data from a different source than then GWM-module the manual says the speedometer gets it from ("The GWM receives the wheel speed data from the ABS module over the HS-CAN2. The PCM uses tire size stored in the vehicle configuration file along with wheel speed inputs to generate a vehicle speed
signal.")

Simplest explanation would be that your car is not speed limited to 263 km/h, but I also have no idea why not.

 

[npole]

Simplest explanation would be that your car is not speed limited to 263 km/h, but I also have no idea why not.

Maybe it's not just mine, but every EU Bullitt.
I do remember that the EU one was limited to 250 km/h like the GT, but then the customers complained that it didn't match with the US version (limited to 163mph), so Ford in an update increased it. Everyone assumed that the increase was set to match the same speed (163mph = 262,3km/h) but that was only an assumption, because I'm not sure if everyone have read the effective value in the PCM (or wherever it is stored). So I'm curious if any EU chap have ever tried the top speed (on the German Autobahn eventually).

 

[Michael_vroomvroom]

Maybe it's not just mine, but every EU Bullitt.
I do remember that the EU one was limited to 250 km/h like the GT, but then the customers complained that it didn't match with the US version (limited to 163mph), so Ford in an update increased it. Everyone assumed that the increase was set to match the same speed (163mph = 262,3km/h) but that was only an assumption, because I'm not sure if everyone have read the effective value in the PCM (or wherever it is stored). So I'm curious if any EU chap have ever tried the top speed (on the German Autobahn eventually).

There was one guy posting here last year about his experiences, taking what I think was also a Bullit to the speed limit on autobahn, but I cannot remember the name of that thread. Maybe if you search here, you will find it.

Not sure if that was before or after this update you talk about though.

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