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I am chopping in my STi9 for a WR1 so I've taken off the 6"x4" Magnex centre and rear box that I had fitted, I love the sound it makes, my question is although the WR1 comes with a Prodrive system would there be any benefit in fitting the Magnex system or would I be defeating the object?
I have been told that underneath it all the Prodrive exhaust is made by Scorpion!...