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Problem solved! 200 1987

Thanks for reporting the numbers.

I've had this scope handy in the garage, and for years grabbed it to better understand what engine management was doing. Most of that time, I also had this relatively inexpensive multimeter, completely oblivious to its "duty cycle" setting. Once I did discover it, I got a chance to verify its accuracy, and be impressed by what a $30 DMM can do these days.

Having some numbers for a performing car could help many others who don't have old tach-dwell meters kicking around but do have access to one of these inexpensive multi-function digital meters.

As you can imagine, a number like 3.8 - 4.0% is much easier to compare and communicate with other DIYers than poorly documented scope traces.


--
Art Benstein near Baltimore

If speed counted, rabbits would rule the world.






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