Hi guys and gals, I seem to be having an issue with my bone stock 06 MCS. When I get on the throttle hard, or even part throttle I can smell the exhaust inside the car. It still smells with the a/c on recirculate. When driving normal I don't smell it. The car runs perfect otherwise.
Has anyone else had this problem?

 

You might have a exhaust leak up near the exhaust header in the engine bay. Check for gasket leaks. The other place that might have a leak but is usually when sitting still is near number 4 in the diagram. If its not the gaskets then it could be the pipe.



Exhaust Manifold Gasket #2 part number 11621174968 make sure all the bolts are there an torqued down.

http://www.ecstuning.com/Search/SiteSearch/11621174968/



&

http://www.ecstuning.com/Search/SiteSearch/07136800269/ Bolt x 8 needed.




For the rear , its moslty when setting still.

Hex nut with flange. x 2 #5 in diagram.

http://www.ecstuning.com/Search/07130757758/ES16372/



Here is the threaded Bolt x 2

http://www.ecstuning.com/Search/18107520438/ES39444/




Number 4 in diagram . Check for leaks at this gasket connection.

http://www.ecstuning.com/Search/18111170941/ES39515/



Thanks and hope that helps. If you can have someone throttle the engine while parked and check for noise of a leak and location, that will help pinpoint it.

 

Thank you for your input

 

You are welcome.