Running two ECM/PCMs in one car/truck

[racprops]

Looking for information on hooking up a pair of ECMs in one car/truck.

Want to run a 165 TPI ECM for fuel management and a 93 ECM to operate the 4L80E transmission.

Rich

[dfarr67]

One of the GM truck TBI ecu's from 1994/5 might to it all- convertible to MPFI and runs the 4L60E don't know about the 4L80E.

[Racer71]

You could do that, you would have to split a few signals rpm etc. you could also buy a standalone tcm for the 80 or just a complete standalone tha would run engine and trans all in one.

[Chris_Hamilton]

https://pcmhacking.net/forums/

You should be able to get some solid info there on what you would have to do. A Microsquirt operating the tranny would be an alternative as well.

https://www.google.com/search?client=fi ... m-srp..0l5

[rebelrouser]

unless you are just trying to do a budget build, spend the money for a system like a Holley terminator that runs the engine and transmission, use port injection and be done with it. The Holley systems that I have installed are easy to tune and work very well. Not saying it cannot be done and you may enjoy the challenge but there is limited tuning software available for any OEM ECM's older than 1996 pre OBD II I have only read about them but a mega squirt system may be your answer if you just want to use the older electronics and injection systems. Their is a lot of help on the forums for mega squirt.

[racprops]

Thanks but I rather run something OEM as this is a stock type engine.

[racprops]

https://pcmhacking.net/forums/

You should be able to get some solid info there on what you would have to do. A Microsquirt operating the tranny would be an alternative as well.

Chris_Hamilton

I have tried two times to get in...no luck can you contact someone??

Rich

[Chris_Hamilton]

https://pcmhacking.net/forums/

You should be able to get some solid info there on what you would have to do. A Microsquirt operating the tranny would be an alternative as well.

Chris_Hamilton

I have tried two times to get in...no luck can you contact someone??

Rich

Works fine for me. Can you not access the page? Or are you having trouble registering? If you can't view the page it's something on your end. Try a different web browser. Clean the web cache and cookies. You may have a virus or malware on your computer.

[dfarr67]

http://www.gearhead-efi.com/Fuel-Injection/forum.php

[racprops]

OK I have been shown the light, I can run a 7427 for a 4L80e and convert it for MPFI.

And I can find 16197427s everywhere reasonable BUT no one can tell me anything about the van or truck they came out of.

They cannot tell me what transmission, engine of even if it was even running when hit.

My old friend who had a junk yard would often say when asked if a part was any good, “Well it was moving when it hit something.” He could then show you to car or truck it came out of. Sadly he passed 7 years ago and wife sold yard.

So looks like I will need to load the basic operating system for a 350V8, for a 4L80e and hopefully for lean Burn Cruse.

My read is I can get any 7427 and just reprogram it…Correct??

Can someone tell me how to do this and what tools will be needed??

And are all operating programs on the EPROM or do we need to make changes to the main ECM??

Best of all worlds will be to have a person load these programs to an EPROM or chip as I also have a Moates Memory Adapter With a preloaded MPG custom chip.

Plus the older EPROM chips from my 93 350 4L60e 165 ECM, so how much of engine and transmission programs are in the EPROMs?

Can I just plug them into a 16197427 and just take off??

As this will be a fresh start up of a new engine I hope to have a good ECM to light it up.

Perhaps someone can sell one? A 427 ECM or loaded EPROM or suggest a good tuner/programmer?

Rich

[dfarr67]

I would suggest you hire DaveW, he knows his chit.
http://www.gearhead-efi.com/Fuel-Inject ... his-normal

[racprops]

Looking for a couple of Prom Chip BNKM 1994 1995 Chevy GMC 5.7L 4L80E 16197427 16196395 Memcal 16213479

Rich