J-bodies and DIS

[TBK]

-----Original Message-----
From: ABTSZ <ABTSZ at aol.com>
To: diy_efi at esl.eng.ohio-state.edu <diy_efi at esl.eng.ohio-state.edu>
Date: Wednesday, April 15, 1998 4:54 PM
Subject: J-bodies and DIS


Yep! Use 90-91 Camaro V6 wiring diagram. Speed Density (Map)

>I've been looking thru manuals at the library and I have a few questions:
>1:  I was surprised to find that ALL j-body V-6s use DIS.  From looking at
the
>diagrams, it seems that the DIS systems work some what on their own, and
that
>the only interaction with the ECM is the same as would be the case with a
>7-pin HEI module.  In other words, I could do away with the DIS (which
would
>require a crankshaft signal) and wire it up to a HEI module, and the
computer
>will still function.  In other words (again) the Sync signal from the
>crankshaft goes to the DIS module, but doesn't go to the ECM.  The DIS
module
>just sends a regular pulse to the ECM, exactly as a HEI module would.  Do
you
>know if this is correct?  (my car already incorporates a 4-pin HEI module
so
>putting in a 7-pin would be pretty much Plug-n-Play.)
>
>2:  I could find no reference to a VATS module in any of the wiring
diagrams I
>saw, so maybe those models (87-89 j-body v6 w/ 7730 ECM) don't use it.
That
>would be a plus!  Of course this information may be wrong, Does anybody
know
>otherwise?
>
>Thanks for any info,
>Adam
>
The J cars with Mass can not use Vats because they use the same input. As I
said, Mass/Vats/and DIS go together in J cars and Map/HEI/No-Vats go in
Camaro's. Both use 7730.

Email mail me directly for all of the info you need. And listen to Mr.
Fenske.

See ya!

TK