So I built up a V3.0 board to run MS2Extra on my Audi Coupe for when the time comes to turbocharge it. I further added a challenge by using only OEM sensors where ever possible and building the MS board into my Audi ECU box.
I tried to get it running the other day, but ran into some issues. The stock 5 cyl 20v Audi motors used 3 sensors to figure out timing: 2 VRs and 1 Hall. The 2 VR get signals from the flywheel. One counts the physical teeth that the starter gear cranks on to give the engine an RPM signal. The second one sees a pin at TDC and is only used on initial start up. The hall sensor is used to tell where the cam is. I can't use just the hall sensor because it is a single window and doesn't have enough detail.
I decided to try to use the dual trigger setup in MS2Extra. Using the VR sesnor that counts the teeth and the hall to get the cam position. I counted the teeth on the flywheel to be 134. Unfortunately if I put in a value higher than 120 teeth into the trigger wheel settings MS goes crazy and none of my IAT, coolant temps, etc read accurately and RPMs are pegged at 63,000ish with the motor not moving. Is there some limitation regarding max teeth or multiples of numbers I can use for the VR sensor?
Has anyone else here gotten their car to run using the factory timing sensors?
I tried to get it running the other day, but ran into some issues. The stock 5 cyl 20v Audi motors used 3 sensors to figure out timing: 2 VRs and 1 Hall. The 2 VR get signals from the flywheel. One counts the physical teeth that the starter gear cranks on to give the engine an RPM signal. The second one sees a pin at TDC and is only used on initial start up. The hall sensor is used to tell where the cam is. I can't use just the hall sensor because it is a single window and doesn't have enough detail.
I decided to try to use the dual trigger setup in MS2Extra. Using the VR sesnor that counts the teeth and the hall to get the cam position. I counted the teeth on the flywheel to be 134. Unfortunately if I put in a value higher than 120 teeth into the trigger wheel settings MS goes crazy and none of my IAT, coolant temps, etc read accurately and RPMs are pegged at 63,000ish with the motor not moving. Is there some limitation regarding max teeth or multiples of numbers I can use for the VR sensor?
Has anyone else here gotten their car to run using the factory timing sensors?
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