i presume you are on about the trusty 20XE rasspy bumblebee frrrzzzzzz. its not the exhaust its the engine that makes that noise. Youve removed teh cat which aswell as removing toxic emissions also muffles the tail pipe noise somewhat. On my dodgy sportex system the "cat pipe" has completely burnt to a shell, so i too get more volume and totally different sound.
I know i have a 1988 astra so it never had a cat, but it still has a cat replacement style pipe, just before the centre silencer.
that's right oddball, same with mine. I had that extra silencer removed and a straight through pipe welded onto the flanges off the extra silencer box. You could use a K&N to eradicate a little of that raspy noise. This is on my cav!
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