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Message: <blockquote data-quote="aoch88" data-source="post: 538916" data-attributes="member: 8491"><p>Thanks guys and I'm on a E60 LCI. Actually I dislike loud exhaust but would like to free some bhp trapped inside the catalytic converter. Since emission isn't really a big thing in boleh-land, I was wondering if it helps to remove those centre cats? True enough that we will lose back pressure and from my previous experience removing the cat on a Honda, it actually made the car worse <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown    :(" loading="lazy" data-shortname=":(" /> I don't dare to simply do it on the E60 so would you guys recommend that I just get a quad exhaust like Remus?</p></blockquote><p></p>