Need a Quiet 3" Muffler *Edited - pics at the end*

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#554769 - 10/12/06 03:30 PM Need a Quiet 3" Muffler Edited - pics at the end
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	Right now I have a fart can. With the header, it's unbearably loud. The silencer helps, but everyone told me it cost them a lot of power. This is what I have: It's LOUD. A small resonator won't make a huge difference IMO, it needs a real muffler. But I need something that flows, has to be stainless. No welding in Cherry Bombs. I was thinking of a magnaflow oval like these Or a Vibrant Oval like this: Edited by Impulsive (10/21/06 08:33 PM)
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#554770 - 10/12/06 03:38 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Euphoricuck Euphoricuck Post Master Supreme Registered: 11/05/03 Posts: 92703 Loc: Canadistan	thermal has done well on most cars ive heard. i really think adding a resonator WILL make a difference. _________________________
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#554771 - 10/12/06 03:51 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	It already has a resonator though. Welding in another one would likely do very little and cost almost as much as a much bigger muffler. _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554772 - 10/12/06 03:54 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Euphoricuck Euphoricuck Post Master Supreme Registered: 11/05/03 Posts: 92703 Loc: Canadistan	you dont have that much room in there too... hrmm. it would definately help if you could get one in there. apexi world sport is one of the quieter exhausts out there ..even in 3" format. _________________________
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#554773 - 10/12/06 05:08 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
morpheus morpheus Post Master Sr Registered: 07/30/02 Posts: 9995 Loc: Warrensburg, MO	I vote that adding a resonator wont do shit, but I dont have any input other than that. _________________________
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#554774 - 10/12/06 05:08 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	Local shop can do the Magnaflow with tip above for a good price. Maybe I'll have him weld in a 20" long, 4" round body resonator in place of the vibrant resonator as well. The header made this thing from loud to unberable. It sounds good when you want to get on it, but on a cold morning, it's horrid. _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554775 - 10/12/06 05:11 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
OnyxEros OnyxEros Post Master Supreme Registered: 02/17/03 Posts: 17517 Loc: Seattle	I have found that a single in dual tipped muffler is a lot quieter than the big grapefruit shooter that is offered with most systems. also if there is any space instead of a resonator just buy another muffler and put it inline _________________________ [quote=turbo_guy_fieri][quote=Kuku]Silence is consent[/quote] [/quote]
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#554776 - 10/12/06 05:13 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	No 3" dual tipped magnaflows (unless I went with "custom" tips). I really dig the Vibrant flat blacks, but no one carries them around here. _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554777 - 10/12/06 06:19 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
ErikB ErikB Post Master Sr Registered: 09/15/03 Posts: 4480 Loc: Sacramento, Ca.	that magnaflow is pretty quiet on the maxxfab srt4 catback. Adding that and a resonator should work perfect for you. _________________________
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#554778 - 10/12/06 07:02 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
fellfrosch7 fellfrosch7 Post Master Registered: 12/17/01 Posts: 2552 Loc: Las Vegas	I had the same Magnaflow oval SS muffler on my old TurboXS system (back when they had the 2.5" axleback section). It sounded nice and rumbly, and it was pretty quiet. Then I switched it out for a JDM angled CF can. _________________________ Running: 99 Maxima SE, 97 240SX SE - All motor Not running: 90 TSi AWD
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#554779 - 10/12/06 08:03 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
ScottStaypuff ScottStaypuff Post Master Supreme Registered: 03/05/00 Posts: 25527 Loc: Ohio	Quote: I really dig the Vibrant flat blacks, but no one carries them around here. How about ordering one off this new thing called the internet? I tease... Here's my proposal: Buy a 3" electric exhaust cutout, install inline with the exhaust. I mean not the "normal" usage as an exhaust bypass. Yes, so it is actually plugging up the exhaust when closed! You will need to drill some small holes in it to allow enough exhaust flow for normal driving. Then when you want to go WOT flip the switch for unrestricted 3" exhaust. If you want to be really cool, wire in a TPS switch and set for 50% throttle or so, so everytime you go full throttle it opens automatically. Bonus points for an extra switch that would allow you to keep it closed at WOT and/or open at will. _________________________
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#554780 - 10/12/06 10:53 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	I try and keep things simple. The Vibrant can be ordered on the web, but the Magnaflow locally is cheaper and is a nicer peice IMO. Why "rig something up" when a 3" mandrel bent exhaust and a free flow muffler will do the job. All I need is the muffler part. _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554781 - 10/12/06 10:56 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Euphoricuck Euphoricuck Post Master Supreme Registered: 11/05/03 Posts: 92703 Loc: Canadistan	screw a cut out..especially for a car that sees winter use. they typically leak/fail. _________________________
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#554782 - 10/12/06 11:18 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
skierd skierd Post Master Sr Registered: 08/21/01 Posts: 9104 Loc: Fairbanks, AK	I dont think any of the straight through style mufflers are going to get you the sound reduction that you want AND not lose any power personally. Its the nature of the beast. Question - Have you tried driving with the silencer in on your fart cannon yet? I know a lot of autocrossers have luck with supertrapp mufflers, especially when running events with sound restrictions. The only good example I can think of at the moment is the GStock Mini Cooper S's. They make the most power, and noise, with 8-10 discs, but are very quiet yet lose a few HP with fewer discs. Useful when you want to open up for a big event but want ear drums for the drive there or have to keep it under 92dB due to the site's neighbors. _________________________ Never run out of real estate, traction & ideas at the same time. 2012 Outback - 2008 Yamaha WR250R v2.0
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#554783 - 10/12/06 11:22 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	The silencer works, but it makes the car sound kinda shitty with the header and everyone in the other thread mentioned how much power they cost. _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554784 - 10/12/06 11:26 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
diku diku Post Master Sr Registered: 12/28/01 Posts: 7308 Loc: Houston, TX	Quote: screw a cut out..especially for a car that sees winter use. they typically leak/fail. much like your motors
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#554785 - 10/13/06 09:04 AM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
SiAdam SiAdam Post Master Supreme Registered: 07/22/01 Posts: 19262 Loc: West By God Virginia	I am running a summit resonator and eBay fart can...sounds good imo for a 4cyl. Your boxer motor is going to sound different no matter how you do it. Best thing for you is to sacrafice 10whp for sound in this case since you DD this thing and don't want droaning on the interstate. I would look into a chambered muffler, not a straight through design...that is where the majority of your sound should be deflected. _________________________ 05 Berlina Black S2000 700whp / 500wtq Built, not bought.
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#554786 - 10/13/06 11:27 AM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
FCobra94 FCobra94 Post Master Supreme Registered: 10/22/01 Posts: 19689 Loc: MD	Quote: Quote: screw a cut out..especially for a car that sees winter use. they typically leak/fail. much like your motors Buuuuuuuuuurnnn... Anyways, not sure how the Magnaflow hack & weld mod will work for you, but I predict that it will cause a lot of droning on the highway, even if it does quiet it down a bit. A chambered muffler will be even worse when it comes to droning. My suggestion is to just pick up a Greddy EVO2 catback, or something, and just call it a day. At least you'll know for sure that it won't be loud, drone, sound like bent ass, etc. _________________________ '07 335i
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#554787 - 10/13/06 11:31 AM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	Magnaflows aren't chambered. _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554788 - 10/13/06 11:54 AM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Nealoc187 Nealoc187 <3 Post Master Supreme Registered: 05/07/01 Posts: 32535 Loc: Lisle, IL formerly Kalamazoo, ...	I am running a 3" from the turbo all the way back with a straight thru dynomax bullet resonator and straight thru dynomax welded ultra-flo muffler - i was absolutely astonished at how quiet it was when my buddy welded it up for me. I was so worried that it was going to be drone-y and loud and shit just like my old catback was on my NA maxima (2.25" mandrel with a big long resonator and straight thru N1 style canister muffler) and it is WORLDS quieter than that was. I can give my mom or sister a ride in my car without them mentioning anything - it truly is hardly louder than stock - not enough that anyone unfamiliar with the car would even notice. I couldn't be happier with mine. BTW you can paint it flat black with high temp paint BTW my setup is quite a bit quieter than my buddy's turbo maxima which has a smaller A/R, and a 2.5" Greddy SP2 (with resonator) which is one of the quieter catbacks out there for my car. Edit: I just realized you said you require stainless - the dynomax ultra-flos aren't stainless, sorry. Still what I'd recommend though. Another buddy (the one who welded up my exhaust) has had his on through 2 illinois winters now and with it painted with high temp paint, the only hints of rust are where rocks and what not have scratched the paint away - just surface rust nothing to be concerned about yet. I have some vids that you can hear how mine sounds if you want to hear them (dyno and track vids). _________________________ 95 maxima 11.7 @ 123mph - stock 3.0L tuned by me on 93octane 12.9 @ 104mph - stock 3.5L w/ bolt ons
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#554789 - 10/13/06 12:08 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	Thanks for the input, any specs on that Ultraflow? (offset in/out, length etc.?) Some people have told me to try and get a dual outlet or cross flow as they will be quieter than a staight 3" in/out. _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554790 - 10/13/06 12:25 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
FCobra94 FCobra94 Post Master Supreme Registered: 10/22/01 Posts: 19689 Loc: MD	Quote: Magnaflows aren't chambered. Yeah, I know. But someone menetioned going with a chambered muffler and that is obviously a bad idea when trying to stay quiet; especially when trying to maintain power on a turbo car. Also, I'm interested in what Nealoc187 suggested. I've heard a lot of good reviews on the Dynomax stuff in the past...too bad it's not stainless though Any pics? _________________________ '07 335i
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#554791 - 10/13/06 12:30 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	You can get the Ultraflow in Stainless, but if the sizes are comparable, I would think they are almost identical to a Magnaflow in sound/performance. _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554792 - 10/13/06 12:34 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
FCobra94 FCobra94 Post Master Supreme Registered: 10/22/01 Posts: 19689 Loc: MD	Hmm. Maybe the key to keeping things quiet is in the resonator then...??? All I know is that a buddy of mine threw a Magnaflow catback on his '02 Si and it was LOUD and droned quite a bit! Sounded like doo-doo butter too _________________________ '07 335i
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#554793 - 10/13/06 12:40 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	Thing is, I do have a 16" resonator in the catback right now. I am thinking of using a round muffler instead though as there is much more packing in those. That, with an oval muffler should hopefully solve the problem. The SRT's with 3" exhausts, no resonators and no cats with a magnaflow are moderately quiet. I just find it hard to believe that an 5X8 or 4X11 oval straight through will take a lot of sound away over the 6" round muffler I have on now. Edited by Impulsive (10/13/06 12:41 PM) _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554794 - 10/13/06 12:59 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
bren si bren si Post Master Registered: 07/22/00 Posts: 2443 Loc: MA	Alright dude you need to stop looking on SvA for exhaust options. headers make our cars sound liek crap, good job on getting one ANYWAYS, if you want quiet you need to ditch that megaphone and get a greddy evolution or borla hush, or a single tip spt exhaust, anything else is loud.....ive been through 5 different exhausts. Also a catted helix or invidia catted downpipe will shut it up a little bit
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#554795 - 10/13/06 01:13 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
fellfrosch7 fellfrosch7 Post Master Registered: 12/17/01 Posts: 2552 Loc: Las Vegas	I voted to keep the header on too. Should have done just the STi uppipe and kept the stock header. _________________________ Running: 99 Maxima SE, 97 240SX SE - All motor Not running: 90 TSi AWD
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#554796 - 10/13/06 01:57 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	Most people told me a header swap went hand in hand with an uppipe/turbo swap, so might as well do it all at once. The stock Forester manifold is supposed to be quite restrictive, even compared to the WRX. _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554797 - 10/13/06 02:05 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Euphoricuck Euphoricuck Post Master Supreme Registered: 11/05/03 Posts: 92703 Loc: Canadistan	Ive always been a fan of the greddy evo.... figured you ddidnt wnat to buy another catback though... _________________________
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#554798 - 10/13/06 02:09 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Nealoc187 Nealoc187 <3 Post Master Supreme Registered: 05/07/01 Posts: 32535 Loc: Lisle, IL formerly Kalamazoo, ...	I didn't notice there was an SS Ultraflo but now that you mention it, I do see it. Anyways he muffler I have is an Ultraflo Welded, oval, center entry center exit 3" all the way through. Looking at their catalog, the only one that matches those specs is the 17220 which is 4.5" x 9.75" x 19" (including the inlet and outlet pipes), the actual "oval part" of the muffler is 14". The Dynomax Bullet muffler I use as a resonator appears to be p/n 24222, 4" outside diameter, 3" straight through inside diameter, 12" resonated section, 16.5" overall length. If you guys want to hear a sound comparison between cutout open and cutout closed I can find some place to host my dyno files. In the cutout closed version there is some good sound footage of before I get on it, so you can hear sortof how it sounds. _________________________ 95 maxima 11.7 @ 123mph - stock 3.0L tuned by me on 93octane 12.9 @ 104mph - stock 3.5L w/ bolt ons
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#554799 - 10/13/06 03:27 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Impulsive Impulsive Post Master Supreme Registered: 11/28/99 Posts: 79943 Loc: Edmonton	So a 5x8 Magnaflow should be somewhat similar with a 3" in/out. I expect some noise, just want it toned down some. Right now, it actually sounds pretty good, just too loud. _________________________ 2016 Stingray Z51 3LT - Stock 2021 Model 3P - I/H/E
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#554800 - 10/13/06 03:33 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
Nealoc187 Nealoc187 <3 Post Master Supreme Registered: 05/07/01 Posts: 32535 Loc: Lisle, IL formerly Kalamazoo, ...	Probably, assuming they use similar type and quantity of sound deadening material which I'm sure they do.
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#554801 - 10/13/06 06:53 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
GB GB Sharesies! Post Master Supreme Registered: 03/22/04 Posts: 37351 Loc: Craigslist	Post Vids Neal _________________________ Ay yo girl, when you gonna let me tap that?
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#554802 - 10/13/06 07:28 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
DomesticPower DomesticPower Post Master Registered: 02/15/00 Posts: 2008 Loc: USA	Chambered and especially Supertrapp mufflers have no place on a turbo car. Just run the longest straight through muffler you can find and you will be happy. The big tips seem to make it louder and more raspy sounding. _________________________ T-66 256" 84 GN- Toy 06 Acura TL- DD 87 Celica GTS- Beater
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#554803 - 10/14/06 05:20 PM Re: Need a Quiet 3" Muffler for a Turbo Vehicle
HCivic02 HCivic02 Post Master Supreme Registered: 03/25/03 Posts: 12496 Loc: CA	I may be coming in late, but I have a Vibrant 3" muffler on my turbo Si....it is absolutly great. It is not loud at all and sounds very "sporty", not raspy or too deep. Some say it's too quiet but I like it. Also, looks very stockish to me Vibrant +1 _________________________ Chris 06' Evo IX - E85@29psi 13' FRS
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