I have recently purchased a 2005 SRT6. I also own a 2005 C55 AMG. I am an electrical engineer and my son is a Mechanical engineer student.

My son is very ambitious and has done extensive mechanical and electrical work to the C55 over the last 3 years.

My question is, I really like the SLK32 instrument cluster and was thinking about replacing the SRT6.

Unfortunately the they have different max speed so the calibration is different. slk32 goes to 200 and SRT6 goes to 180.

Does anyone know what would need to be done to change the calibration?