Quote:
Originally Posted by ghlkal
My tach is also way off (maybe not 2K at idle, but not close to being accurate)
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Just to follow up now that I can read the RPM from the HVAC display. Here's how far off my tach is:
tach reads / actual RPM
1000 / 650
3000 / 1750
4000 / 2325
4500 / 2700
5000 / 2975
6000 / 3500
This is up to a 70% error
