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Car is from year 1997. It sports turbocharged 1.8liter inline four, has passive coil-on-plug ignition system and crank triggers: primary VR (60-2 wheel) and HALL as cam sync. Also it is equipped with strange throttle body. Perhaps it's one unit TPS and idle valve? I took some measurements also: two pins have 5v supply, one pin has 12v supply and one pin had something like 10.x volts supply (measured when engine was not running, only ign. was switched on. That's what it looks like. http://www.hot.ee/raceboy911/A4TB.jpg Looks like a newer version of InTake/ThrottlePlates/VAGElectronicThrottle ------ I connected all the sensors to VEMS unit and everything worked fine (including TPS) but the stock VR sensor. I put the 60-2 wheel specs all correctly (check the config : MembersPage/PeepPaadam/AudiConfig )but no rpm signal. When i switch from multitooth to coil-type, it shows 100rpm every crank rotation like it should (one trigger event per rotation) but in multitooth mode...nothing. *Here is the trigger settings that is diffrent from my #HansK: **crank_minper=8B #50 **tooth_wheel_twidth1=02 #06 **tooth_wheel_twidth2=06 #12 ------------ I might also innstall VEMS on such a 20vT so I'm curious #HansK: * Are you using IGN_DUALOUT and origianl coils? '''A:'''I'm planning going sequential, but I'll start the car in dual_out mode. Yes, original coils. * Are you planing to use cam-trigger? any info on the original? '''A:''' Cam sync is one window Hall sensor. -------- Tried different settings but still nothing. Only in coil-type, it shows 100rpm like it should with one trigger event per rotation. Could it be that the LM815 chip is somewhat less sensitive than it should be (referring to MarkoTsirk case)? *Any input? ** 100 rpm in coil type settings is way too low, if you get all 58 teeth registered in coil type mode, RPM signal would be insanely big. Can you scope trigger signal? Maybe mixed up cam and crank trigger? ** I know of one case where threshold on LM1815 had to bee 0V -> Pin 5 grounded. Because of very low amplitude at low rpm. #HansK
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