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oldcorollas
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Kita-Ku, Sapporo, Japan
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January 2003

Re: testing Jaycar HEI tach signal for Megasquirt	Fri, 10 December 2004 06:41

cool, thanks for the feedback Chris do you have a Dave cap installed? (and the other diodes/caps?) i'm using effectively the 2.98MS code, modded to have EGO turn off at 65kpa, rqther than a TPS value. i added the dave cap to try and filter it a bit, but it had absolutely no effect. the difference between the points alone and the HEI shows that it is the HEI inducing a lot of noise (coil ringing?) figured it was better to try a whole bunch of different values to see the effect (and results are interesting!!) seems that i could use anything from 10K to 50K with no issues (50K still ran to 8000rpm) i was logging using 20ms also, resulting in 18 samples per second. i am going to swap R10 for a 15Kohm (1watt) and then fo extended datalogs and see if there are any issues... does MSnSe have the 2.98 mod to code to prvent false triggering for 'x' time after a pulse is detected? Cya, Stewart [Updated on: Tue, 14 December 2004 06:10] [Report message to a moderator]

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