Anyone here with experience with opening up our ECUs:

Yesterday we opened up the DME to flash straight to the chip, since the DME would not accept un-interrupted reading via OBD of the base software in the DME.

The ECU identifies itself as DME 7.8.2 996 turbo to the flash tool, but when reading out, to create an upgraded flash file, it stops communicating after a few seconds (almost like key is off). Voltage is ok.

Step 2 was to open up the ECU to read straight from the chip.
But when opening the chip (not modified except someone put some gunk around a capacitor which can vibrate loose I learned) it's not the same layout on the DME as it is supposed to be for 7.8.2 chip. The memory "processor" is not on the "top" part of the chip/board as expected, and I guess it must be located underneath (on the metal plate side), this is how some 996 Carreras had it?

We didn't strip the chip from the metal plate, instead going back to do some more research.

Tried to read the complete ECU as an older Carrera ECU, but it won't since it immediately identifies the ECU as a 7.8.2 996 turbo and tries to read it as such.

Has anyone ran into this before and what can be done to work around? (apart from stripping the chip from the metal plate with risk of breaking it - but then still the pol4 and pol5 need to be identified to read at the right place).

Actually can someone chime in, do we have the right documents re what the 7.8.2 DME chip looks like? Does the memory processor for a normal 996TT / 7.8.2 DME sit on the top side of the chip, or the "underside"/metal plate side?

 

SOrry for the OT but.....you are back!!! So let the fun begin (again)!

Whenever you have some time, could you elaborate on the "custom engineered theft prevention mods"??

End of OT.

As for the DME, maybe it would be simpler to send it to a tuner (like EVOMS or EPL, Proto etc..). They should be able to identify it and to fix any issue..
Just my 2 cents..

 

First off I dont remember what the dme layout is and the gunk is stock.. The chip soldered and it is glued down. I remember something about the 01 units though. Did you try grounding the unit when you opened it? there is also 1 pin you need to ground out on the chip for it to read/write.. I am a good bit into my holiday spirits show this memory thing may take a while.... The 11th or 7th pin. haha or is that the shot count..

 

Did you find any notes or such to get some more info on this? My flash file is ready to go, the DME chip just doesn't look like the later models so it's hard to guess which are the correct pins.