2010 Yaris Sedan Runs Really Loud

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My 2010 Yaris Sedan Runs Really Loud.

This started after my last oil change, but not sure why. Could this be a Heat Raiser Valve (if they call it that still) gone bad?

Years ago, cars had a Heat Raiser Valve between the Manifold and Exhaust. Do not know if this is the case.

Guess I'm going to have to take it in and see.

[WeeYari]

Don't know anything about a 'heat raiser valve' but the first thing I would look at is the donout gasket between manifold and pipe. Your car is getting to the age where that gasket is reaching end of life.


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[ex-x-fire]

Is it an exhaust leak? Or could it be a noise that come while driving, like a wheel bearing.