Vida CEM swapping

Post by **vtl** » 10 Mar 2021, 08:45

zajcis wrote: ↑10 Mar 2021, 01:27 Has anyone tried cracking CEM of P1's facelift, which is based on 1M84E processor?
I use Teensy 4.1 with external CAN controller at the moment, but this is what it gives me:

Calculating bytes 0-2
1000 pins in 663 ms, 1508 pins/s, average response: 26
[ 00 -- -- -- -- -- ]: Failed assertion 'averageReponse >= AVERAGE_DELTA_MIN' in crackPinPosition() line 923.

How to deal with it?

Run "git checkout ab3616bbcd32042cd25e99057d710be6e7d99c87" in your repository clone and try again.

jcdillin · Post by **jcdillin** » 10 Mar 2021, 09:45

vtl wrote: ↑10 Mar 2021, 08:37 Nice! Are you going to do code changes yourself to support that new CPU platform?

Going to give it a shot! Happy to send over a proto if you want to take a look.

jcdillin · Post by **jcdillin** » 10 Mar 2021, 12:47

Well happy to report complete success, D5T5 inputted my CEM pin and I was able to complete the swap over to a manual gearbox. Now I can drive without the transmission failure message.

Of course I fell out of my chair when I went to do the RTI upgrade on my car through the CEM, $179!! Going to have to start playing with the config block of the bin file.

Has anyone played around with downloading/uploading the CEM firmware over CAN?

Post by **vtl** » 10 Mar 2021, 12:48

What do you want to do with the RTI?

jcdillin · Post by **jcdillin** » 10 Mar 2021, 13:00

I'm adding one

Post by **vtl** » 10 Mar 2021, 13:05

It is a bad idea for a sunny place like Florida. I managed to fit Garmin nuvi65 LMT into RTI, it worked, but was stopping battery charging all the time because breaking the thermal budgetin "cold" New England summer. Android smartphone (LG Stylo 3?) was quickly overheating and shutting down completely. Plus the view angle is awkward, plus you see exactly nothing in sun.

Better get a Bluepower HU with Android or any 2DIN if you don't mind the aftermarket look.

Post by **vtl** » 10 Mar 2021, 13:16

I think your whole RTI setup + configuration change rob will cost you as much as BP.

jcdillin · Post by **jcdillin** » 10 Mar 2021, 13:22

I already have all the RTI hardware installed from a northern car, not really installing it for using it, I have google maps for that. It's just getting the car to have all the period correct functions.This isn't my daily driver, just a fun weekend car. I have a NA V70 I use daily for work.

urosm · Post by **urosm** » 15 Mar 2021, 16:50

Hello,

Sorry for maybe stupid post

I read that what parts I need to make board.
With what program you run CEM Cracking? Arduino or something similar?

And can this method of cracking do something to other car modules?

Thanks in advance,
Uros.

Post by **vtl** » 15 Mar 2021, 20:49

This is a project for Arduino ecosystem. The hardware (the board) is Teensy, for which you need to compile and upload the software from withing the Arduino IDE.Teensy's Arduino support package and details can be found at Teensy's web site.

Vida CEM swapping

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