OBD II LT1 Engine Swap Gotchas???

[xxalexx at ix.netcom.com]

> Date:          Wed, 03 Feb 1999 16:26:23 -0500
> Subject:       Re: OBD II LT1 Engine Swap Gotchas???
> To:            diy_efi at efi332.eng.ohio-state.edu
> From:          "Andrew K. Mattei" <amattei at mindspring.com>
> Reply-to:      diy_efi at efi332.eng.ohio-state.edu

> "David A. Cooley" wrote:
> > >Pre OBD_I?  But that would mean using an ECM that's pre 1988.
> > 
> > Actually, the 94/95 was more like OBD_I 1/2...  93 and earlier should work
> > without the rear sensor
> 
> I'll give you the OBD 1 1/2 - I can't use a paper clip to flash SES
> codes on my '94 Z28. However, there is *no* O2 sensor after the cat.
> Know that for a fact. The stock exhaust is sitting in my garage storage
> closet - and it butts right up to the cat...
> 
> Plus, the ALDL info available is significantly more for the '94/95 than
> there was for the '93. Not that more is better, there's just more
> there... ;)
>
Could be a calif. obd2 phase in car. 20% per yr. starting 94.
alex