G61 and G62 Knock Sensor Harness Connectors

[UrS4boy]

This is C4 AAN specific but hopefully will apply to the ABY and ADU fairly closely as well. First the AAN wiring diagram:



Then confirmation of the wire colours at the harness connectors:

G61 (Front, Green):



G66 (Rear, Blue):



Might come in handy during an issue diagnosis in the future?

More G61/G66 Knock Sensor Info here:

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

[UrS4boy]

ADU G61 and G66 Harness Connector wiring colours

This is C4 AAN specific but hopefully will apply to the ABY and ADU fairly closely as well.

Based on this diagram from S2Central.net, it looks like the wiring colours for the ADU (and therefore likely the ABY) are the same as I documented above BUT there is something wrong with the labelling of "G61" and "G66" on the diagram.

[sailaz]

Is there any difference in technical side of these sensors apart of connectors colors and cable lengths?
I'm building 2.5 stroker and I have brand new 077905377D knocks which are from Audi A8 D3 with V8 3,7/4,2 (BFL/BFM) engines
so I'm wondering if would be OK to use them
P.S. connectors are different from old knocks but this is not an issue.

[newsh]

Just the cable length I believe.

[Error404]

Knock frequency is proportional to bore diameter, so different bore diameters produce different knock frequencies. Most OEM knock sensors are narrow band sensors, and a lot are tuned to 2nd order harmonics, so you must be sure the sensor can present the frequency that the ECU expects

[sailaz]

Sorry, forgot to mention that ECU is aftermarket and will be tuned accordingly
P.S> already cleared that for aftermarket ECU doesn't mater which knock, it will be tuned as needed (sorry for my English )

[Tom_]

sailaz What about 1.8T knock sensors on stroker and aftermarket ECU?

Edit: what about 0 261 231 046 ?

Edit : Could be used a normal bolts with proper thread to fit those sensors to the block?Or what u used?