Code Speedo to read more accurate?

[DialedIn]

New X5 E70 2013 30d owner here.

One thing that bothers me immediately is the speedo which reads about 8% too high.

I have the heads up display, and that's all I look at. I don't care if the analog speedo is off.

Is there a way to adjust the speedo to read more accurate?

I have the BimmerGeeks standard tools for coding.

[CarFan]

I've had several BMW's and they all seem to read faster than the actual speed. I use a satellite based app to determine my actual speed and then set the cruise control accordingly.

[jbash87]

There are options in the gage cluster module (I can't remember the actual module name in NCSEXPERT, nor the specific lines of code) which will help. They will not remove all of the "error" however.

To remove all the error look into a program called Perfekt Toolbox

[DialedIn]

Originally Posted by jbash87

There are options in the gage cluster module (I can't remember the actual module name in NCSEXPERT, nor the specific lines of code) which will help. They will not remove all of the "error" however.

To remove all the error look into a program called Perfekt Toolbox

Thank you! Perfekt Toolbox looks to be exactly what I was hoping to find!

I will go back to my E92 and fix it's speedo as well. I had the Carly App that let me get a more accurate digital reading in the E92, but it was never truly accurate.

[jbash87]

Originally Posted by DialedIn

Thank you! Perfekt Toolbox looks to be exactly what I was hoping to find!

I will go back to my E92 and fix it's speedo as well. I had the Carly App that let me get a more accurate digital reading in the E92, but it was never truly accurate.

The digital readout suffers from the same "error". There are actually 2 lines of code which affect the speedo readings. One for the gage and one for the digital readout. But PT will fix it for good.

It's pretty interesting when you get into it because the "error" isn't linear as you would expect it to be if it were in fact error. It increases with speed.

[JellyStyle]

Originally Posted by jbash87

The digital readout suffers from the same "error". There are actually 2 lines of code which affect the speedo readings. One for the gage and one for the digital readout. But PT will fix it for good.

It's pretty interesting when you get into it because the "error" isn't linear as you would expect it to be if it were in fact error. It increases with speed.

anyone know where to buy or get Perfekt Toolbox?

[jbash87]

Originally Posted by JellyStyle

anyone know where to buy or get Perfekt Toolbox?

I downloaded it from some forum. Probably E90post from many moons ago. I'll try to search for it again when I'm off work. Worst case I'll figure out how to upload it and share.

[JellyStyle]

Originally Posted by jbash87

I downloaded it from some forum. Probably E90post from many moons ago. I'll try to search for it again when I'm off work. Worst case I'll figure out how to upload it and share.

I found it here on his website, use Chrome and it will translate, download link is also on his website

https://www.drive2.ru/l/496203276497191008/

Download
https://toolbox.mrperfekt.com/downlo...ektToolbox.zip

[DialedIn]

I just did the speedo calibration with the Perfekt Toolbox tool and it was super easy and took like 2 mins. By far the most rewarding mod I've ever done to my BMWs.

[JellyStyle]

Originally Posted by DialedIn

I just did the speedo calibration with the Perfekt Toolbox tool and it was super easy and took like 2 mins. By far the most rewarding mod I've ever done to my BMWs.

Any details for those of us that hasn’t done it yet ?
What were the steps to complete ? Thanks mate

[DialedIn]

1) Install BimmerGeeks Standard Tools

2) Install Perfekt Toolbox

3) Connect your laptop to the OBD2-port with your K+DCAN cable

4) Open Perfekt Toolbox and read from ECU and save the current settings (save to PTG-file)

5) Change the numbers for the Effective (real) speed (km/h)

I changed my numbers based on the 50km/h number that I figured was off by 7%, some excel calculations told me this was still 2,3% off the "real" speed.

So I just added 2,3% to all the speed values:
10.2 51.1 122.8 266.0

These numbers worked for me on my car with the stock rims and stock tyre dimensions.

6) Write the new numbers to the ECU by clicking "Write to ECU".

7) Test drive with a trusted GPS device to get accurate comparative data and make adjustments as needed.

[JellyStyle]

Thanks mate, i wonder if these tools will work with F02 and G12 series.
Bimmergeeks BMW Standard Tools:

https://drive.google.com/file/d/1DHz...ew?usp=sharing

BMW v69 Datens:

https://drive.google.com/drive/folde...HGh0ZwwU1U2cdV