ECM Identification

[Canyonero]

I have two ECUs, and I THINK one is for an auto and one for a manual. What would happen if I were running an auto programmed ECU on a manual vehicle? Is there a way to positively identify them?

The engine was pulled from a '94 Camaro/Firebird (auto). I have a standalone harness made by Fuel Injection Specialties (http://fuelinjection.com/).

The ECU that came with the engine (so I assume it's for an auto) has this on the label:

SERV. NO 16184737 BKWW
< barcode >
*86BKWWK341272411*
< perforation >
16203281 BKWW
< barcode >
*86BKWWK341272411*

The other ECU, which I think I got off eBay and was auctioned as a manual unit has this label:

SERV. NO. 16196742 BPCN
< barcode >
*86BPCNK343430292*
< perforation >
16217101 BPCN
< barcode >
*86BPCNK343430292*

[bszopi]

http://www.autoecmecu.com/chevrolet-ecu-16196742_3731.html

Looks like you are right with your identification. As far as running a auto PCM with a manual, it is going to be looking for input from the tranny for certain tables (possibly fuel and spark), so I'm not sure how well it would work. You'd probably have to trick the PCM somehow to see certain signals.

One that just came to mind is the park/neutral position switch. If the PCM thinks the car is in P/N, then there is a built in rev limiter of ~3k.

[Canyonero]

So according to that, the ECU I'm using is not for an auto. So I should be ok... riiight.

*sigh*

Why won't this thing run right?