Exhaust gas coming only from the right side pipe

[RocDoc]

I have a 3.3 GT AWD and I have noticed a strange behaviour in the cold weather. It has been under -20 C for a while now, (-4 F), I have Webasto FBH, which I run usually for 30 mins before starting. The engine starts ok, but for the first 5 min or so there are exhaust fumes coming out only from the right exhaust pipes. The engine runs well and the performance is ok. I have no garage so the car stands in this cold weather. Anyone else in the cold climate have noticed this?

 

[NS_Stinger]

Nothing to worry about, common for cars with dual exhaust that one outlet happens to expel more fumes than the other.

 

[Josh16162]

Exhaust will travel the path of least resistance, but isn't this only common on BMWs that close a valve when the car is cold, or old cars that have heat risers?