Carl 3 Report post Posted August 28, 2004 Not really that intersting, but I was feeling rather empty after the cat was cut out, feeling better now after having two cobys put in Quote Share this post Link to post Share on other sites
Guest Spargo Report post Posted August 28, 2004 sound clip? Quote Share this post Link to post Share on other sites
bimmer boy 21 Report post Posted August 28, 2004 i have heard about these things but what exactly do they do and why are they so special? Quote Share this post Link to post Share on other sites
bmwsparkle 3 Report post Posted August 28, 2004 top man carl. sound better? bimmerboy, i have 4 of these on my 5 (2 per pipe) mainly just for the general size as it fits easier underneath, but they also sound good and flow really well. Quote Share this post Link to post Share on other sites
bumpstop325 0 Report post Posted August 28, 2004 i have to same set up. but for a 325, of course. carl, are one of the cobys facing the other way?? or are they both the same? Quote Share this post Link to post Share on other sites
Carl 3 Report post Posted August 28, 2004 (edited) Sam, I took a filem clip of it for about 12 secs but it's 10MB and I can't make it smaller so I won't bother posting it. Bimmerboy, they're coby resonators and they're basically a chamber that allows the exhaust gasses to expanded and offer a little bit of sound muffling and it's debatable whether the improve flow or not...but they're better than a muffler performance wise. EDITE: Sorry Tim, posted as you did, they're both the same, they be looking quite smart side by side :mosh: Edited August 28, 2004 by ///Carl Quote Share this post Link to post Share on other sites
petone 0 Report post Posted August 29, 2004 Nice, who fitted them for you? Quote Share this post Link to post Share on other sites
Carl 3 Report post Posted August 29, 2004 Got it done at Tuffy's auto centre, $220 all up, Ian recommended them to me. Quote Share this post Link to post Share on other sites
