vems speed sensor Hz

[amd is the best]

Your assumption is incorrect. Re-read my post, I told you everything you need to do, to the letter.

You're arrogant on just about every forum you're on, aren't you? You did not describe what I need to do "to the letter."

The signal goes from the box to the speedo, the speedo buffers it, and then it goes from the speedo to other modules, such as the climate control, radio, cruise control and so on.

"Box" aka transmission? What "box" are you referring to?

So what you want is splice the speedo output,

Meaning after the speedo. (cluster)?

not the wire that comes from the gearbox.

Meaning after the speedo. (cluster)?

And Marc has a point with the zener - you need to shunt the excess voltage so you do not damage the ADC on the processor.

This makes sense.

[prj]

Perhaps you should just give this to someone who is better versed in electronics and understands what inputs and outputs are - it will also minimize the chances of accidental damage to your engine control unit.
Sorry for trying to help, I will refrain from doing so in the future.

[amd is the best]

Thank you for the clarification.

[a4kquattro]

On a side note Marc, do you have any experience with the newer firmwares in regards to vems reading this signal clearer after 1.1.95? My problem is that although vems sees the wheelspeed sensor, if you remember it jumps around and its making vems very erratic. After sending files to vems.hu of trigger logs they said they cannot do anything. It seems that some Audi's the sensor reads clearly and in some it doesn't. (Even though in my car the flywheel pin is an excact replica of the dual mass flywheel now in size and width.)

the flywheel has nothing to do with the wheelspeed.

wheel speed comes from the 3-pin (although it only actually has 2 pins in it) speed sensor on the side of the transmission. its VR type, and pics up a chunk of metal in a tone ring inside the transmission. Although to partially answer your question I've had good luck with 1.2.10 and 1.2.11 in general. Divby9 on the flywheel triggers seems to improve some issues some customers have with random engine speed trigger errors.

[A80Avant]

That sounds good then. Im planning to upgrade soon to those versions. So div by 9 is the best to try and recalcilate the timing with a strobe light?

[peter_jensen]

For 3b the best way to tab the signal is to connect direct to the sensor at the gearbox. If you connect other places you can have noise and you will get random values.

You can order the speed kit from vems.hu or make one yourself.

Happy Tuning
vems.dk