Yeah, i was thinking of doing the same thing to mine, ive cut the cat box open and took both filters out, they are like house bricks i couldnt believe it! and then i was going to cut straight through the centre resonator box, remove the left hand side resonator box and re-route the pipe straight to a new piper box, decided against it though now, going straight for a piper cat back stainless steel exhaust system, unless theres a better one out there for less than Â£280
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