I wonder about the inside, because it's shaped like a glasspack or performance canister. Could it be straight-thru?

 

I don't know, but I think it would be.

 

You know, this is an important check, because if it's truly a straight flo-thru, you would just need to change the muffler to get an extra dose of performance.

A Hushpower might be a nice replacement, it's almost free flowing and controls resonation.

 

The resonator has a baffle in it, not straight. Bunch of metal plates like a rat maze. Then again, I have a sedan and the resonator might look different.

Replacing the midpipe is critical.

 

The sedan and hatchback exhausts are probably the same. I doubt they would spend extra R&D money just to differentiate the two.
Of course, I could be wrong.

 

sedan and hb are not the resonators are completley different i took my res out and replaced with a glass pack and its louder also a muffler delete
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2009-10 systems should be the same for WRX. ScoobySon is your resonator glasspack like, cylindrical and straight?

 

 

I have a 2.5i hatchback, and mine looks exactly the same. I don't have a picture, but aside from different piping behind it, the shape is identical.

 

Oh, I forgot the sedan has 2 mufflers. But is that 2009?

 

Yes, as what it says I drive in my avatar and garage.

 

WOW! So that is completely different from what I have in my wagon. Mine looks like a glasspack, I sure wanna know about the inside.

 

Maybe the Hatch doesnt need a crazy resonator considering your muffler is huge!

 

On my 2.5i, the muffler actually doesn't do very much muffling. The resonator does nearly all of it. I've taken off both just to check the sounds, and the difference is spectacular.

 

That could be true, the muffler under the rear bumper takes almost all its length.