I have completed the retrofit of the 2VF / M-adaptive suspension on my 2020 M2 Competition!
....Mostly! I'm still waiting on the actual dampers to arrive but I used some EDC delete load resistors as a stand-in to get the system working in the meantime, and there are a few minor coding things I haven't figured out.
Current issues:
ZGW Initialization code hangs around even after initializing car
Honestly this retrofit was not too terrible to figure out. This is my first time working on an F chassis and I had to figure out a lot of stuff the hard way. Such as... the ICM is still capable of triggering the airbags even if the car is "off",
you MUST disconnect the battery to replace the ICM.
HUGE shoutout to david51 for helping me with some of the coding gremlins.
How I performed the retrofit:
Software used:
ISTA+ 4.39
E-sys 3.30
Tool32
PsDZdata 4.43.21
Hardware:
VDC Module + Connector (I used one from a 2015 M4)
ICM Module (Optional maybe? I used one from an M240i)
Center console operating unit (buttons) [ 61317850481 ]
4x Accelerometers [ 37156871465 ]
4x 3-pol TE MQS connectors for the accelerometers [ 1-967642-1 ]
4x 2-pol TE MQS connectors for the dampers [ 284703-1 ]
Contacts for MQS connectors, 18 AWG [ 5-965906-1 ]
Contacts for MQS connectors, 22 AWG [ 5-962885-1 ]
Wire seals for MQS contacts 18-24 AWG [ 1-967067-1 ]
Lots of wire
General guide:
Unfortunately I don't have time to write up a full step by step but here are the tasks I had to accomplish in order to get the system working:
- Created wiring harness - used ISTA EDC SSP diagram
- Coded the "Typschlussel" for an M2 CS to the car, e.g. 1J31, 1J33
- FA/VO Coded 2VF, apply coding to Kombi, ICM, DSC, and HU
- CAFD injection on EDC module (also CAFD injected and flashed ICM)
- Opened port 0x02 in Tool32
- Connected EDC Flexray to FEM A173*8B pins 29 and 30. Created a jumper for 11,12, and 21,22 (see picture below)
I will update this post with any edits or additional information as needed. I will try to answer any questions and elaborate.
Disclaimer: This is for informational purposes and I cannot help you with any issues with your car that may arise as a result.