2 knock sensors, 5 cylinders how does that work then?

[s2_wot]

This question just came to me while reading Lou's thread. So anybody tell me how the system decides where the knock is?

[Kieron20V]

Flyheel position, timing?

[driftin jo]

It knows what cylinder is on its compression stroke.

I'm not even sure if motronic does per cylinder timing retard anyway, it may just retard the timing for all cylinders if it hears knock. I'm sure someone will confirm if it has per cylinder retard or not but if it does like I said above.

[s2_wot]

Dmitri stated in another thread that the retardation was on a per cylinder basis, that's what got me thinking. I neglected to consider that motronic is looking at all the other details too. Thanks for the prompt answers gents.

[UrS4boy]

G61 and G66 Knock Sensor info

This question just came to me while reading Lou's thread. So anybody tell me how the system decides where the knock is?

This info might help you:

http://forums.quattroworld.com/s4s6/msgs/21047.phtml

[prj]

I'm not even sure if motronic does per cylinder timing retard anyway

It does.

[s2_wot]

Is it possible then using vag-com or other method to log the instances of knock detection on a per cylinder basis?

[Ian Simmonds]

do you have a doorbell in every room of your house?

[prj]

Is it possible then using vag-com or other method to log the instances of knock detection on a per cylinder basis?

That is my wet dream, and the reason why I am sitting right now and disassembling the LDR chip in IDA Pro...

[s2_wot]

do you have a doorbell in every room of your house?

not at the moment but I might upgrade to a whole house system in the future

That is my wet dream, and the reason why I am sitting right now and disassembling the LDR chip in IDA Pro...

Is it something that can be logged on newer cars? By the time you're finished with motronic bosch wouldn't even recognise it What is LDR if you don't mind?

[prj]

Is it something that can be logged on newer cars? By the time you're finished with motronic bosch wouldn't even recognise it What is LDR if you don't mind?

Yes, you can log this on ME7.1 for example with ECUx.
LDR software is in 87C257 chip. Probably comes from the german word "lader" (charger).

[pixsaudisex2]

do you have a doorbell in every room of your house?

Yes why i live in a bed sit..

[UrS4boy]

LDR software is in 87C257 chip. Probably comes from the german word "lader" (charger).

As in turbolader.

[S2central.net]

Tis good fun winding back the electrics from the car loom to where it interacts with the various chips inside the ECU... so that dmitri can focus on the right part of the matrix in the search of knock logging, hidden comms routines and such like. The more we learn about the complexity inside that 20yr old factory ECU the more amazing it is to think how advanced it was in its day - and still very capable today for silly power levels today as we slowly unravel the machine and discover how to do hitherto unmentionable things.

[Billman]

Yes, you can log this on ME7.1 for example with ECUx.
LDR software is in 87C257 chip. Probably comes from the german word "lader" (charger).

maybe Ladedruck as in Boost