Roperteacher

Hey there! If this has been discussed at length, please give me the link so I don't have to waste anyone;s time... I heard there were some big differences between the 06 ECM and 07 ECM on the 5.9l... Can someone explain what the biggest differences were? THanks!

tritont

I don't know that anyone knows exactly what the differences are. That's a DC secret If anyone did know, there wouldn't be so much trouble getting electronics to work on the late model 07's. Both are Can-bus and it has something to do with data streams as oppose to actually voltage being distributed to various components.

t-boe

I think the differences are on the '06.5 and up for the ecm. Just a some small differences in code as far as I know.

Minwy

Early 06's are different than 6.5's and 07's but thats all I know about it.

jrussell

There's definitely a difference between 06 and 06.5+. Whatever the difference is, it's enough to cause melted pistons when a TST is used on the 06.5+.

I'm really beginning to wonder if the difference also has something to do with why I can't get an aftermarket turbo to run right on my truck.

DBLR

I over heard some talk at a Dodge dealership back in July of 2006 that Dodge had been working on new ECM code to help them find traces of add on power chips/boxes easier. This could be why some 2006 and 2007 trucks have a problem getting add on boxes/chips to work right due to code changes.

Roperteacher

I'm staying stock thats for sure, but I heard from someone that the ECM's were different. When I told them I had an 07 5.9 they said " Oh, you got one with the new ECM".. seems to run fine just like my 06 did.. I bet your right, probably detects more goodies!!

CD in NM

There is a major difference in DATA STREAM technology and how different systems/components of a system integrate and function vrs a voltage being applied in system function. This new ECM is more technologically improved, you could call it more artificially intelligent. While I am sure DC would like to look at 'detection' of aftermarket equipment, this ECM leans toward a different direction based on sensor inputs/outputs and their language not being a voltage back and forth but actually a data stream in bytes of information.

It is more sensitive to radio frequencies interferences, that has been the big drawback on data streaming in other similar types of applications. So, something like a liner amplifier coupled to a CB radio could wreak havoc on electronic functions. Even something as simple as a rural digital electric service might cause interference as their equipment data streams metering information. I would not want to be parked next to one of those meters and have it do a self-test, might be quite an issue when your ECM tried to apply the electric company's data stream to some vehicle function. This HAS ALREADY been an issue with the early 07 trucks owned by electric companies. They have had to shield their ECM's from the interferences.

As far as the additions of power boxes to the 07 5.9 engines, there doesn't seem to be any differences, they are just plugging in and operating. The 6.7's seem to be another story, but they actually make full use of the new ECM's capabilities. Since most all power boxes are designed for voltages in their circuitry, programming them for data stream complicates matters. It won't be long before the market will have the data stream conquered.

CD

jrussell

I assume you're referring to the CANBus system? Both the '06 and '06.5+ use the CANBus system, but there still seems to be some major differences between the '06 and '06.5+ ECM's though.