Subpage of MembersPage/MarcellGal/PowerAndTraction, the implementation of PlugAndPlayMotronic on Audi 200 quattro 20V turbo
The differences between
- AAN
- 3B
- custom harness based on Econoseal-36 + Econoseal-18
- or small adapter from EC-xx to AAN or 3B
However, there are a few details about the car that would be nice to have in the PNP install.
Anyone aware how the motronic55 ECU notifies the
- fuel-consumption display
- and the boost data display
in the Audi 100/200/S4 ? Likely the same in the 80/90 chassis.
MembersPage/DaveHartnell might know after 2007-03-12, when his factory manual set with extensive wiring info should arrive.
- The manual shows that a potentiometer<variable resistor> described as a fuel consumption sensor in the Fuel distribution head/flow meter measures the position of the plate, just like a TPS. IT's a 3 wire sensor that connects directly to the gauge for its power, ground and signal
The gauge cluster has some adjustment for fuel consumption trim between 0 and 15% is described in the manual using some switches or a resistor on the cluster itself.
I can take measurements of the Sensor with the throttle plate closed, at idle and at WOT if they are useful.
Speculation and experience
MembersPage/EmilLarsson knows the bmw's do some strange calcs inside cluster, for fuel consumption: the gauge starts moving when hooking up tachometer.
MembersPage/SamiKorhonen : some guy used 0-5V signal what his old KE-jetronics MAF gave to his computer.
In fact the tach signal, and a 0..5V signal should be all that is needed. We just have to find out where the 0..5V signal connects, if it's MAF or MAP signal, and if it works like we think ;-)