Residue from exhaust

I started the Duke after a month of down time and it happened to be sitting next to my car. I let it warm up (4 bars) revved the engine a few times (4-6K) then let it idle for another minute or two and shut it off. When returning the bikes to the garage I noticed some residue/deposits on the car from the exhaust. Any idea on whether it’s normal or not, what it is etc. Thanks Chris

My garage door looks like this as well but I only notice it when idling from cold. Isn't it just carbon deposits? Will probably be worse if running the Akra map.

Haven't noticed that yet, must have a look around the garage, but the smell of burned petrol on my wife's clothes and hair after a ride must be a sign of rich misture