Another Conversion

[53 Catalina 292]

Nice to have a vehicle with happy family memories - who'd guess that the nuisance of having choke trouble on a camping trip would trigger good memories decades later? Kind of shows to go ya not to sweat the small stuff. I have a 91 Cutlass Cruiser handed down to me by my folks, now gone to be with the Lord, that I'm occasionally working at getting back in shape. Thanks for the research and info about netres pack. Is that built into the PCM, do you think, or a separate module? The need for programming surprises me, the size of the engine fed by your donor system and your engine size being so close. In my ignorance, I wonder if substituting one injector from a 2.8 or 2.5 TBI would lean the idle mix, and still give you enough at wide open throttle. If the computer just regulates pulse width, and the injector nozzle flows less, hmmm. Nah, too simple - couldn't possibly work. Or could it?

[r.e.c.enthusiasts]

I think the netres pack is the soldered chip next to the p-rom. As for the smaller injector i kinda like the idea of programming it better. But i will go look at the tbi units at the yard. But most of them have 1 bbl for the smaller units with same size injector

[53 Catalina 292]

Yeah, come to think of it, the 2.5 injector is sized to run a, well, 2.5 engine - would likely flow more than one injector of the 4.3. If a 2.8/173 has 2 injectors ( I don't know about that), one would maybe flow enough for 1.4 litres/86 c.i. So one 4.3 injector and one 2.8 injector only flow enough for 217 c.i., maybe not enough for the 250 at wide open throttle. So that line of thought seems to be at a dead end, which is OK, because it wasn't your favorite anyway. Now you don't have that excuse for another trip to the salvage yard. You'll have to come up with another one.
The soldered netres pack situation means I'd better hunt for a 4.3 PCM to start with.

[r.e.c.enthusiasts]

Well. Got the check engine light wired up and the diag switch. No codes present... but upon my neighborhood test drive at low rpm it seems fine. But if I put it under load it cuts out momentarily off and on....

[r.e.c.enthusiasts]

I think I have to add the vss

[53 Catalina 292]

All right! You've got it mobile! That's a big step in the right direction. Don't be pushing those Mustangs around too bad at the stop lights.

[53 Catalina 292]

Get anywhere yet sorting the VSS and cutting out momentarily under load?