Chevy ECMs

[Ernst Denbroeder]

Curious...

Is the 96 PCM a pre 96 with additional circuitry or is it a ground up
redesign?  


	Ernst.




> -----Original Message-----
> From:	Ken Kelly [SMTP:kenkelly at lucent.com]
> Sent:	Tuesday, February 02, 1999 9:02 AM
> To:	diy_efi at efi332.eng.ohio-state.edu
> Subject:	Re: Chevy ECMs
> 
> Curtis,
> 	The 96 PCM is OBD-II compliant. It is much more sensative
> to changes than the older units. It will set a lot of error
> codes if you make engine changes. A 94-95 PCM (16188051)from
> any LT1 will plug into your wiring harness and run the
> engine. It will not have OBD-II and not use the aftercat O2
> sensors. Be sure to change the Knock sensor in the engine to
> match the original PCM application. Some people have had
> success changing the Knock module in the PCM to the one from
> the original PCM and not changing the KS.
> 
> 		Ken
> 
> > Curtis Mittong wrote:
> > 
> > I have a 96 Impala SS with an LT1.  I also have a bare LT1
> > block that I plan to bore and stroke to 409.  I already
> > know about all of the mechanical pitfalls I will hit, but
> > wondered how much HP will the stock PCM handle with
> > reprogramming and about #52 injectors?  Will I be able to
> > do it?  If not, what PCM should I use?
> > 
> > Curtis