Bench racing ecms Even if ya hate 101 please read

[Bruce Plecan]

-----Original Message-----
 <kenkelly at lucent.com>
Subject: Re: Bench racing ecms Even if ya hate 101 please read


>Bruce,
> the 94 to 97 LT1 PCM's have four connectors, not three. They are color
coded
>white, blue, red, and black. Each is a 2 by 16 array of pins on 1/8th inch
>centers. looks like a computer floppy or IDE ribbon cable connector except
>slightly larger pin spacing. Each color connector has a different key
position.

OK got that
>
> For the VSS be advised that P4 use 30 Hz and 94 & up uses 50Hz.

This confuses me, They use a PWM, at these frquencies??..
>
> Ken
>
Cheers
Bruce