sinds sunday my car is making this wierd noise , its like a freakin subaru id expected it would run on 3 cilinders but the engine itself is running on 4 and real smooth. yesterday i changed the exhaust manifold gasket still no change it was blowing a little so thats cleared out. its really annoying me .
The harder you press the gaspedal the harder the sound gets i still think its exhaust related. when the turbo comes in its at its loudest.
Its also making these little ticking sounds in the exhaust i think it is just cant say where its all coming from
Any ideas what would make such a sound?

Thanks