GAD tuning are well known for there work on mercedes 350 cdi engines, did we create the worlds fastest ?
Here is a C350 GAD tuned a while back for a partner company.
documented as possibily being the worlds fastest C350 cdi!
check out the write up below:
https://www.autoevolution.com/news/this-is-the-most-powerful-c350-cdi-in-the-world-photo-gallery-64243.html