DIY: Eliminate Speedometer Error doityourself

[Hermes]

you would laugh at how optimistic my E21 speedo is, easily 10%... but that can be adjusted with the springs inside the cluster. Easy old school technology

[terraphantm]

Terra, what do you know about setting BC_V_KORREKTUR to "nicht_aktiv" via NCSExpert? I did that & my speedo error went from ~3.5 mph (probably exactly the 5.7% you mention) to only 1 – 2 mph. It didn't completely remove the error, but greatly reduced it. Any idea on what your method would do in my case?

Good question. I was under the impression that only affected things like the average mph calculation. I would think setting the correction factor to "1.000" would effectively eliminate the difference between the two settings

[az3579]

I have verified that this works on a ZHP with stock tire diameters.
It is dead on, or at the very least within 0.5mph. It's tough to keep eyes on the road when looking at the speedo AND the phone...


Thanks so much for the info, man! Now I don't have to question myself when I pass a cop!

[derbo]

Terra, B,

where is a good place to get a PA Soft?

[trancenation]

I got my pa soft BMW scanner 1.4 from xcar360 s website. It shipped from china and took about a week and half. Didn't have to solder anything and works perfectly.

[cakM3]

terra, good stuff here!!!

Thanks for taking the time to research this and posting the results for everyone to benefit from



Sent from my DROID RAZR MAXX HD using Tapatalk 2

[derbo]

I got my pa soft BMW scanner 1.4 from xcar360 s website. It shipped from china and took about a week and half. Didn't have to solder anything and works perfectly.

Thanks jay.

[terraphantm]

I use this one: http://www.newegg.com/Product/Produc...9SIA1GK0TS4738

Took a 5 days to get here from China

[az3579]

I use this one: http://www.newegg.com/Product/Produc...9SIA1GK0TS4738

Took a 5 days to get here from China

My mind has been blown; Newegg carries this. Wow.

[alexandre]

My mind has been blown; Newegg carries this. Wow.

Through their marketplace, not themselves directly.