Quote:
Originally Posted by JohnJL
I am finishing up a megasquirt installation on a 3l and am seeing weird voltage fluctuations in my logs. I am working with a tuner remotely and he noticed this before me.
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I wonder if the lightweight battery doesnt act like a voltage buffer, I thought I heard normally batteries also serve to level out voltage fluctuations. Or a bad altertator regulator? Something else?
Appreciate any help,
John
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Batteries do smooth the voltage. They are really a very large capacitor/filter.
Megasquirt in back (by engine) battery in front. You may be measuring noise and voltage drop in the cables.
Is the tuner you are working with used to 911 or is his data based on front engine cars, where the megasquirt is likely connected with a very short cable to the battery?