phoenix70
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| posted on 24/5/10 at 03:31 PM |
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Tach Signal and Megasquirt
Hi Guys,
Just trying to get my Rev counter working with my MS. I haven't added the necessary internals to the MS to get the MS to provide the output for
the rev counter, and I really don't want to open it up again to change it. The Rev counter was supplied by the -ve side of the coil and
I've come across this diagram
 
MS Tach
This refers to and EDIS setup, but I’m using a wasted spark setup. Will it still work?
Also does anyone happen to have the appropriate Diode lying around, that I could have?
Cheers
Scott
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doddy
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| posted on 24/5/10 at 03:37 PM |
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i think i have my rev counter wired up to the edis unit but i have not had it runing yet
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matt_gsxr
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| posted on 24/5/10 at 03:54 PM |
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give it a go. There is a chance that it will over-read by a number of different integer factors.
It all depends what the Rev counter is expecting, but if it a 6 cyl rev counter that was originally getting signals directly from the coil then I
think this could well work.
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Lars
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| posted on 24/5/10 at 04:55 PM |
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worked on my zetec coilpack
(followed the 4 cylinder route described above)
[Edited on 24/5/10 by Lars]
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turbodisplay
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| posted on 24/5/10 at 05:01 PM |
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That circuit will work only on a 6 cylinder tachometer that works by sensing the high voltage "kick" from the coil when the plugs fire.
It won`t work on the ones that work sensing the switch to the -ve.
Darren
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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turboben
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| posted on 24/5/10 at 07:53 PM |
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Worked on mine(4cyl) but I had to add a pull up resistor.
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