Re: Cam tuning

[Ludis Langens <ludis@cruzers.com>]

Scott Knight wrote:
> 
> The Opti low-res portion has the
> required 8 evenly spaced slots and should be suitable for triggering any
> ECM/PCM with the leading edges.  [...]
> The sensor voltage goes from 0 to 5v when a leading
> edge comes up.  Does an ECM care when the voltage goes low again?

The P4 ECMs care only about one edge of the signal.  (I forget if that's
the rising or the falling edge.)  The other edge will only do anything
during "EST Bypass" mode (starting and limp-home).

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/


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