2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

muffler?

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Old 01-03-2012 | 06:01 PM
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chevygirl2006's Avatar
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muffler?

I'm getting tired of how loud and obnoxious my exhaust sounds.Ever since i put my downpipe and header on its been annoying and i cant take it anymore.It sounds like theres marbles poping around in my muffler. I was wondering if theres a quieter muffler i can put on my car to help decrease the sound? oh and btw i have a pacesetter catback

Thanks
Old 01-03-2012 | 06:14 PM
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try using a cherry bomb as the resonator are you catless?
Old 01-03-2012 | 06:17 PM
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na i have the zzp 2.5 catted.so i should just put a resonator on instead of getting a whole new muffler?
Old 01-03-2012 | 06:19 PM
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if it sounds like marbles in your muffler, your cat or your old cat probably broke and you have pieces of it in your muffler, that happened to me on my old LSJ
Old 01-03-2012 | 06:20 PM
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it just sounds really raspy. especially at high rpms.i just want to quiet it down.
Old 01-03-2012 | 06:23 PM
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yes put a resonator under there
Old 01-03-2012 | 06:26 PM
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is there a certain brand i should get? I was just going to get a magnaflow muffler and replace my crappy pacesetter one lol
Old 01-03-2012 | 06:53 PM
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Just change the muffler or add a resonator don't waste more money changing the whole catback.
Old 01-03-2012 | 06:55 PM
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cherry bomb resonator with magnaflow muffler
Old 01-03-2012 | 06:58 PM
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oh ya i know.i wasnt going to buy a whole new catback. ill try the new muffler and then if that dont work ill put a new resonator on it too
Old 01-03-2012 | 07:18 PM
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I heard Turbo xs sound good, quite at cruising and deep on hard acceleration (ttr have them)
But I hearded it on boosted cars. YouTube.

The ones I know that should be ok are:
Magnaflow
Borla
Dynomax

Last edited by DFZ24; 01-03-2012 at 11:50 PM.
Old 01-03-2012 | 08:24 PM
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k thanks
Old 01-03-2012 | 11:20 PM
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I have a dynomax super turbo muffler on my exhaust.
This muffler diverts the exhaust through an "S" shape to eliminate all the harsh noise that
a straight-through muffler doesn't filter out. It still flows more than enough air for the 2.4, so you won't lose hp.

Last edited by silver_stig; 01-03-2012 at 11:22 PM. Reason: Automerged Doublepost
Old 01-03-2012 | 11:34 PM
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ya i was lookin at the dynomax mufflers. they sound good?
Old 01-04-2012 | 12:31 AM
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what would be better? An oval shaped muffler or the circle one?
Old 01-04-2012 | 01:54 AM
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I have same setup as you pretty much with dynomax muffler.... still a little loud for me.... planning on adding a 2nd resonator.... but dynomax is the quietest from my understanding that wont reduce hp.... like guy said its s shaped.... the only issue i had with it is it had to be mounted on a slight diagonal to keep from rubbing on the rear fender well and melting it.... this is what i know regarding your issue
Old 01-04-2012 | 01:59 AM
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So which shape? Oval or circle?
Old 01-04-2012 | 02:05 AM
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take a video, its probably an exhaust leak
Old 01-04-2012 | 02:18 AM
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I don't think it's an exhaust leak.
Old 01-04-2012 | 09:08 AM
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Oval would look more stockish.... and I don't like the look of the other one because looks like a fart can lol. Just a thought.
Old 01-04-2012 | 09:35 AM
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i have a dynomax Super turbo muffler 3in to accompany my 3in catback

my review of the muffler is this 1k-3k its a deeper sound and sounds pretty good

3k-4.5k or so is raspy @ WOT
5k-redline it is oddly enough quiet, idk now how to explain it really its just straight thru with no rasp

i have full vibrant header| catted dp | catback, had to get rid of the muffler as cops liked it ^_^

so i tried stock muffler and that was causing back pressure problems or something

then i did the dynomax and its been good to me, sounds awesome when i let off pop's crackle goodness

haha
Old 01-04-2012 | 10:09 AM
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hate glasspack mufflers(just blow out and get loud)

exhibit a ...see how far it burned the paint off the outside of the body(4") i know that all/majority of the packing has long burned away from the sound of it

for a resonator i recommend either an rsc style or something with a stainless steel packing, or even magnaflow

as for a quiet muffler, stocker would be the cheapest/easiest
Old 01-04-2012 | 11:06 AM
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i like exhibit A
Old 01-04-2012 | 11:20 AM
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Yeah I would get a dynomax muffler and for a resonator either magnaflow or vibrant. Cherry bomb is too cheap and will fail after awhile so don't waste money on it.
Old 01-04-2012 | 11:45 AM
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Originally Posted by DSmastery
i like exhibit A
actually the pic was taken for my UCR's but its a good shot of my giant resonator too haha, i might have been able to fit 1 more inch longer in there if i really wanted to haha...huge


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