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IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now. Visit Preferences to set your user name Summary of change: '''Auditrigger research''' Here I'm going to add info about som auditrigger research I have made. The so called 135 trigger system or (c270). At first a began to look at this picture. http://www.sjmautotechnik.com/trouble_shooting/wave/RPMTDCId.jpg I then realize the home trigger have a frequency which is half of the primary trigger. That means if you superimpose the home signal over cranksignal you should in theory get a 135-2 triggersignal. Small other things to notice: 1. Original home signal is inverted to crank-signal. Possibly for superimposing signals. 2. Same type of signal has been seen on Toyota 24/2 Distributor also with inverted "home" signal. 3. Small interference between crank and homesignal is no longer an object for filtering since they are merged. I also find a schematic over a Motronic system from a Porsche with have a similar system (no Cam-trigger). I copy the input circuit to pspice and began to simulate signals and as an output I got a 135-2 signal. I will describe this better later on. I also have made prototypcard with components to test in a real car. More info to come. Optional: Add document to category: Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.