Date registered: Oct 2012
Vehicle: W204 C320CDI 2009 and W639 Vito 115CDI 2006
Location: Perth, Western Australia
Mentioned: 3 Post(s)
Quoted: 86 Post(s)
You CAN change the Diff Ratio! On my W204 at Least.
I have copies of MB STAR DAS/XENTRY 10/2008 and 01/2011 with Developer Mode and a Chinese C4 multiplexer.
I've been playing around learning how to use them. In both versions I can reconfigure the variant coding to change the differential ratio.
I want to install a Quaife LSD into my 2009 W204 C320CDI and thought if I could put a slightly lower final drive into it the car would absolutely fly. The C220CDI has a 2.65 compared to the C320CDI at 2.47. That's a lowering of the final gearing by about 7%.
So it can be done and I now know how to recode it so the ESP, speedo, transmission etc will all work fine.
I've attached a print screen showing the drop down box available where you can select which diff you have in the car. It lists all the MB ratios available.
I'm riding for you #52, my dear son Cameron 1985-2009
2009 W204 C320CDI C Class sedan with Quaife LSD
2006 W639 115CDI Vito LWB Van for hauling motorcycles
2008 W164 ML320CDI Edition 10 (daughter's but I look after it)
2011 VW Polo 6R Hatch
2008 Honda CBR600RR race/track motorcycle
2010 Suzuki GSXR750 race/track motorcycle
2011 KTM 530 EXC Enduro motorcycle