subaruski Posted July 26, 2009 Share Posted July 26, 2009 I have had a Cobb catless DP for a couple months now, just added the Cobb Mid/Y pipe. Took some vids to get everyone an idea of the sound. It sounds awful raspy too me... Maybe I need a resonator but I have heard the full Cobb CBE before and it sounds much much better then mine. I thought keeping the stock cans would keep it quite. I can't feel any leaks at idle. I was hoping there was an exhaust leak but I have not seem to of found one so far. Mods are: -Cobb Stage II AP -Cobb Catless DP -Cobb Uppipe -Cobb Mid/Y pipe -Perrin TMIC -Avo panel filter Pics of the Cobb mid/y pipe I purchased. http://i17.photobucket.com/albums/b77/Subaruski/P7240316.jpg http://i17.photobucket.com/albums/b77/Subaruski/P7240315.jpg Video (crappy digital camera with a lot of background noise, sorry) [ame=http://www.youtube.com/watch?v=SEqjxiPSejo]YouTube - Cobb Uppipe, Downpipe, Mid/Y Pipe[/ame] Random youtube video of Cobb CBE on a legacy gt [ame=http://www.youtube.com/watch?v=UZwYmaX3HRU]YouTube - Legacy GT Cobb Turbo-back exhaust[/ame] Now WTF that sounds wayyyy better then mine Link to comment Share on other sites More sharing options...
Mr. Sinister Posted July 26, 2009 Share Posted July 26, 2009 Man, that sounds horrible. Are you sure nothing is loose? It almose sounds like there's metal on metal contact. Beyond that, I doubt you'll get the deeper tone like the other exhaust using stock cans. Link to comment Share on other sites More sharing options...
dudeondacouch Posted July 27, 2009 Share Posted July 27, 2009 to that sounding absolutely awful. Recheck your install. Link to comment Share on other sites More sharing options...
subaruski Posted July 27, 2009 Author Share Posted July 27, 2009 Man, that sounds horrible. Are you sure nothing is loose? It almose sounds like there's metal on metal contact. Beyond that, I doubt you'll get the deeper tone like the other exhaust using stock cans. I pretty sure there is no metal on metal. But ugh I want this fixed. to that sounding absolutely awful. Recheck your install. Ugh I know. When the car is idling I put my hand under near the mid/dp where the donut gasket is and feel no air. Did the same for where the Y pipe meets the mufflers. I wish I had access to a lift so I could get it up in the air. Link to comment Share on other sites More sharing options...
dudeondacouch Posted July 27, 2009 Share Posted July 27, 2009 Take it to a muffler shop. They will put it on a lift and tell you what's going on for free at most places if you ask nicely. Link to comment Share on other sites More sharing options...
korpsepatrol Posted July 27, 2009 Share Posted July 27, 2009 Well first off you have a catless setup with NO resonator on the mid and y. Also your using stock cans, the stock cans sounded quite tin-y after i put on the x02 mid and y on my old car. After i put on the avo's the baffles in the avo's dropped down the sound by alot and made it quite deep, even the x02 mufflers dropped down the sound as well as my custom made lachute muffler replica's. Try using a different muffler, also install a resonator in the mid and y. The video you posted which is not yours is using cobb mufflers too. 2008 6mt Legacy Gt Spec B DGM - Not so Stock/Work in progress 2006 5mt Legacy Gt OBP - Sold 2005 5eat Legacy Gt OBP - RIP R.I.P Coxx Link to comment Share on other sites More sharing options...
LGTAWDTRB Posted July 28, 2009 Share Posted July 28, 2009 its because of the stock mufflers without a doubt, if there's no leaks nothing else really could contribute to that raspyness....get the cobb mufflers and it will sound like that silver lgt...did u notice a signifcant power gain thru those mods? Link to comment Share on other sites More sharing options...
subaruski Posted July 28, 2009 Author Share Posted July 28, 2009 its because of the stock mufflers without a doubt, if there's no leaks nothing else really could contribute to that raspyness....get the cobb mufflers and it will sound like that silver lgt...did u notice a signifcant power gain thru those mods? Added the uppipe and the mid/y pipe at the same time. Definitely could notice a difference. I thought a couple people had run the cobb or the perrin mid/y pipe with stock cans before in order to keep the noise down a bit. Link to comment Share on other sites More sharing options...
tsunami Posted July 28, 2009 Share Posted July 28, 2009 I'm running an Invidia Catless DP with the Perrin Mid/Y with stock cans. I think it sounds alright. can't really tell if its raspy cuz its not that loud. But when I step on it, the boxer rumble is much more noticeable than stock. The Perrin Mid/Y have a resonator though. Link to comment Share on other sites More sharing options...
peteyjr Posted July 29, 2009 Share Posted July 29, 2009 Adding the extra Magnaflow muffler (straight thru design) in place of one of the cats really deepened the exhaust sound on my sytem. Link to comment Share on other sites More sharing options...
rexster Posted July 29, 2009 Share Posted July 29, 2009 Added the uppipe and the mid/y pipe at the same time. Definitely could notice a difference. I thought a couple people had run the cobb or the perrin mid/y pipe with stock cans before in order to keep the noise down a bit. i have the perrin d/p and mid/y with stock cans and it doesn't sound raspy at all. it sounds a lot like a stock sti, just a little bit of the classic unequal length header subaru boxer sound. i do have a cat and a resonator, maybe that makes a difference. Link to comment Share on other sites More sharing options...
korpsepatrol Posted July 29, 2009 Share Posted July 29, 2009 the cat makes more of a difference then the res but both combined does lower the noise quite a bit. 2008 6mt Legacy Gt Spec B DGM - Not so Stock/Work in progress 2006 5mt Legacy Gt OBP - Sold 2005 5eat Legacy Gt OBP - RIP R.I.P Coxx Link to comment Share on other sites More sharing options...
subaruski Posted July 29, 2009 Author Share Posted July 29, 2009 the cat makes more of a difference then the res but both combined does lower the noise quite a bit. some how i should convince you to trade me for your Perrin mid/y Link to comment Share on other sites More sharing options...
korpsepatrol Posted July 29, 2009 Share Posted July 29, 2009 I would be glad to trade but i can't have downtime since i use my car to commute to and from work. So if your willing to ship first i will gladly ship it out once i put the cobb on. 2008 6mt Legacy Gt Spec B DGM - Not so Stock/Work in progress 2006 5mt Legacy Gt OBP - Sold 2005 5eat Legacy Gt OBP - RIP R.I.P Coxx Link to comment Share on other sites More sharing options...
scoobydoobie Posted July 29, 2009 Share Posted July 29, 2009 The problem is the stock cans have a lot of baffling material in them. With the increased flow of an other wise free-flowing exhaust they sound like crap IMO. [ame=http://www.youtube.com/watch?v=9QlMlG4CIOI]YouTube - 05 Legacy GT Stock Cans Take 2[/ame] [ame=http://www.youtube.com/watch?v=SpgpCh3Y7Ng]YouTube - '05 Legacy GT w/no cats[/ame] [ame=http://www.youtube.com/watch?v=1hE5WVImerA&feature=related]YouTube - Legacy exhaust[/ame] I had planned to run aftermarket mid/y and stock cans with my other wise free flowing exhaust system (Grimmspeed header, GS UP, Cobb DP) until I heard those sound clips. Now I'm just gonna leave the CBE completely stock or do some quiet axlebacks like the AVOs or something. Link to comment Share on other sites More sharing options...
SnowBound BP5 Posted July 30, 2009 Share Posted July 30, 2009 Wow I didn't know having a resonator in there makes that big of a difference in sound quality. Now I'm wondering whether it's really worth it to get the aftermarket mid+Y when I move to Stage II. Link to comment Share on other sites More sharing options...
subaruski Posted July 30, 2009 Author Share Posted July 30, 2009 Wow I didn't know having a resonator in there makes that big of a difference in sound quality. Now I'm wondering whether it's really worth it to get the aftermarket mid+Y when I move to Stage II. But dyno says its worth it. Keep in mind that I'm running at catless DP and stock mufflers. I just picked up a set of Cobb Mufflers and they are on the way. At this point I dont care if its much louder i just want it to sound better with a lower tone and no raspyness. Link to comment Share on other sites More sharing options...
peteyjr Posted July 31, 2009 Share Posted July 31, 2009 Always worth openning up our exhaust and improving the flow . Maybe a little loud and annoying with a catless DP and straight thru mufflers (drone issues) but there are solutions. Def been there. Link to comment Share on other sites More sharing options...
subaruski Posted August 7, 2009 Author Share Posted August 7, 2009 Problem solved. Sorry about the wind noise in the background.... [ame=http://www.youtube.com/watch?v=XUIPHGjw75Y]YouTube - 2005 Legacy GT Cobb catless turbo back exhaust[/ame] Link to comment Share on other sites More sharing options...
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