Tuning options for Dodge Mopar

[mekkis]

mekkis, have you got any notes if your process, or the disassembly, or anything about how you located these addresses or anything?

It is located in this post some pages back. I made notes to this thread as I was laid up on the shop couch, sick, hashing out the .xdf

[Asylumwarp]

Anyone ever put a 411 ecm in a 98 ZJ with the jtec pcm? I'm tired of no tuning solutions, I have a bdm... I have successfully talked to 411 ecms thru bdm now. I don't see why I cant communicate with the jtec the same way. Mekkis, do you offer tuning for these cars? If I can pull the bin, do we have a completed xdf with timing tables? If I can pull a bin, I can write it too.

[darkcorp]

Hi, guys!

I live in Russia and build 4.6 stroker ('99 Jeep Grand Cherokee WJ).
I need to tune my JTEC PCM.
It has ab28f200 chip so I've unsoldered it and read the programm.
But PCM has film-like board and while tuning I'll need to soldered the chip several times. That will destroy the film.
There are some pads near the chip so how can I use them to reprogramm the chip?

0_91c0b_286f8e83_XL.jpg

Thanks
Albert

[mekkis]

Hi, guys!

I live in Russia and build 4.6 stroker ('99 Jeep Grand Cherokee WJ).
I need to tune my JTEC PCM.
It has ab28f200 chip so I've unsoldered it and read the programm.
But PCM has film-like board and while tuning I'll need to soldered the chip several times. That will destroy the film.
There are some pads near the chip so how can I use them to reprogramm the chip?

0_91c0b_286f8e83_XL.jpg

Thanks
Albert

A datasheet and a multimeter answers that.

Those pads alongside the flash are what the "instrumented" 96-98 JTECs daughterboards are attached to.

[2ss8]

Hi, guys!
I live in Russia and build 4.6 stroker ('99 Jeep Grand Cherokee WJ).
I need to tune my JTEC PCM.
It has ab28f200 chip so I've unsoldered it and read the programm.
But PCM has film-like board and while tuning I'll need to soldered the chip several times. That will destroy the film.
There are some pads near the chip so how can I use them to reprogramm the chip?
0_91c0b_286f8e83_XL.jpg
Thanks
Albert

how do you edit the bin, what kind of software are you using ?

[34blazer]

mekkis, you still out there? Any updates to flashing these POS's? I still have the very basic XDF you posted a few years ago. Do you have a more defined xdf you are willing to share?

[darkcorp]

Guys!
Does anyone have definition file (xdf) for my ECU?

It seem like soon we will have a device to read/write/diag JTEC via OBD.

[Montecarlodrag]

Anyone ever put a 411 ecm in a 98 ZJ with the jtec pcm? I'm tired of no tuning solutions, I have a bdm... I have successfully talked to 411 ecms thru bdm now. I don't see why I cant communicate with the jtec the same way. Mekkis, do you offer tuning for these cars? If I can pull the bin, do we have a completed xdf with timing tables? If I can pull a bin, I can write it too.

What do you use to read/write by BDM to 411 PCM's ??

[darkcorp]

I have bin file pulled from my wj 4.0 pcm. Pm me if needed.