cdk4219

The w203 c55 I bought has a non highway friendly 3.06 gear ratio in the back. I am going to see what 2.65 rear diff will work in the car, and am going to need either a tcu flash, or I was thinking a TCU from a w211 2005 to 2006 E55 may work without issues. I believe the rev limiter is the same as the NA 113 5.4 , but the tire circumference between the two cars is different.
I am eventually going to transplant an m113k engine trans into the car, but thought I would get this done first m.

MJBelcher500

You may want to contact this place https://mkultraelectronics.com/