Average fuel maps

[Bruce Plecan]

From: Robert Humphris <r.humphris at indigo-avs.com>
To: 'diy_efi at efi332.eng.ohio-state.edu' <diy_efi at efi332.eng.ohio-state.edu>
Date: Tuesday, April 07, 1998 7:59 AM
Subject: RE: Average fuel maps
>>From what I just heard was 1-5ms for TBI, and 2-10 for Port.
>Okay, thanks for that, what I could also use is the frequency of these
>pulses, I heard that they should not be 'on' for more than 90% of the
>time, is this true?  So at a 9ms pulse width at maximum flow I would
>imagine that the minimum 'off' time would be 1ms.  Therefore my next
>question is, what are the average spaces ( this may be a crap question )
>between pulses at tick over and maximum revs... now I know that there is
>probably no rule of thumb, all I am trying to do is get rough start up
>figures so that the system has at least some data to start from.  My
>thinking is that it is easier to modify an existing value, than to
>create one from scratch from thin air.
>
>Rob Humphris
>>
The TBI's fire alternately on ignition pulses.
The Ports fire once per crankshaft revolution.

The TBI's have other firing strategies for accleration, etc..
Bruce