- Location
- Torrance, CA
That is all right, we will hold a prayer meeting for you guys...
No, really...
As I understand it, your PCM is the same as well. All of the pre-COP PCMs are the same at the hardware level.
Coil
On
Plug
Fir those wondering.

Well, there are two different "Hardware levels" Jtec and Jtec+. 96 is a unique year because it's missing a fair bit of code that was added in the later years which makes is a real bastard year. pretty much to the dealers the 96 was un-flashable because it had no flash security routines built in. 97-98 are very similar and are plug and play for a 96. 99 is the first year of jtec+ which included changes like going from a resistance based oil pressure sensor to a 0-5v signal. This is not unique to jeeps, its the same on the rams and vipers.
The way Chrysler setup their ecus with only the drivers there were needed for their given application so like a 4 banger jtec can't run a 6 cylinder and so on, the only exception that I've found is on either the ram or the dakotas the v6 ecu has enough drivers to run a v8.
I can push any flash I want into any ecu and I've even taken my 99 cal and flashed it into a 3.8 KJ ecu and run that on my jeep, I had no gauges because the KJ doesn't have CCD, but it ran the motor just fine.
For extra credit, who knows what JTEC stands for? Also does anyone know why the two jtecs below look completely different from each other? No, they are the same year ECU.

Last edited: