I have a 2009 MCS with Alta cold air intake and hot side boost tube. I purchased the vehicle used recently. When I get on the turbo hard for more the 30 seconds I start to get a light burning rubber smell. I haven't pushed the car for long periods of time yet so I'm not sure what it is. I'm guessing it has to do with the hot side boost tube. Anyone else have the same problem?

 

I get that sometimes too, bone stock.

 

Basicly, it's from the heating of the turbo at a quick pace. If you gun the car, it turns the turbocharger quickly, and heats it up very fast. It's not bad, the only problem is this burning smell. Happens to most of us, not sure about the JCW.