Hi,
I bought a pre owned Audi, Q5 2.0 TFSI, 155Kw, CAEB (KHR MXV LZ7H N1F/CA).

After that I notice the black exhaust pipes I start loocking on the parking lots,
... all Audi's Q5's and BMW's and WV's have the extremely black exhausts.
(I have Honda with 250.000 and the exhaus pipe is cristal clear.)

I did some research and looks like the blackness is the mix AIR/GAS ratio
and due the gas quality in Canada.
I would like to have a chip access to the car controller to tune up the ratio myself,
but looks like the internet lacks on such resources. I am a verstile programmer
(arduino, kernel linux, electronics) and I dont see an isssue not trying it myself.

Any resources links would be appreciated.
I will update this thread with my progress if I can find a way.

Also the MMI media infotainment, are there any links and how to find what
version is running and what's the latest version, and upgrading procedures.
Mine does not have a GPS. Does the MMI supports external GPS antenas, and
new firmwares having GPS. Amy links would be appreciated.

Thank you.