Tracer study - parameters

Hi,

I've exhaust model as a part of more complex machine. I'd like to simulate hot exhaust gases leaving the installation and check if any other component of machine do not suck from the exhaust. Issue is that while I do Inlet mass flow with T=500*C I cannot in parallel add tracer study (CO) for the surface of gas emission. When I disable Inlet - I can add tracer but there's a problem of temperature which cannot be applied.

How to prepare simulation like this?

Regards.

SolidworksFlow Simulation