On my 07 impreza 2.5 I have a muffler and
resonator delete current and I was wondering if
there's anything I can do to make it more louder
i guess. I know putting uel headers will do alot
but what about the cats. They have an o2
sensor on it and was wondering like could I
take the cat out how would I also replace it?
Put a blown 572 hemi in it.
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