Good Sounding Quiet Exhaust

[Fett]

I'm with Ryan on this one. I also have Super Turbos with dumps, at idle it resonates...mainly because I have my idle set at 1000rpms....driving it is mean, but not too loud.

With full pipes they sound very nice while crusing, not loud at all...but when you romp on it they come alive. I read an article a while back that tested different mufflers, and the Super Turbos were one of the best flowing mufflers on the market, out flowed Flowmaster by a mile....but that's not really hard, chambered mufflers flow like garbage.

 

[ike34]

Do you have any sound clips?

 

[Darkwriter77]

Quietest mid-pipe is ... anything with cats. Can't get much quieter (or more restrictive) than an OEM H-pipe with four cats, but any aftermarket X- or H-pipe with cats is going to sound pretty similar. Just be sure to get something that actually has HANGERS, because X-pipes like Pypes, UPR, and so forth do not have them at all; not having hangers makes it easier to install, true enough, but it also allows the center section to constantly keep sagging down to a point that you scrape and drag on every little bump and dip on the road. With the UPR cat'ed X-pipe I've got, I had to jack the thing back up and re-tighten it every couple of weeks. VERY annoying.

Quietst cat-backs are (when installed behind above mid-pipe):

Dynomax Super Turbo (sounds almost like stock)
Flowmaster Delta Series (AKA Force II ... not the American Thunder cat-back, which uses plain ol' 40-Series Flows)
Hooker Maximum Flow or Dynomax Ultra-Flows with 2.5" flowtubes/tails (very mellow at idle/cruise, but roars at WOT)
FRPP stainless cat-back (pretty much stock)

As much as I love my Pypes Violators, I wouldn't recommend them to anyone that's looking for a QUIET cat-back, at all.

As far as the cop ... I say if he gives you any crap about your car being loud, you should crawl under his car(s) and drill a bunch of big holes in his mufflers, then call in a complaint against him for HIS loud exhaust.

 

[iwashmycar]

my pair of hookers are pretty quiet

 

[ryan218]

Do you have any sound clips?

i do but its not a good one....

ill get a better one later on for ya....

edit...nvm video has no sound for some reason.

 

[Darkwriter77]

my pair of hookers are pretty quiet

Is that because they're lying in the trunk?

 

[FrankenStang]

 

[ike34]

I dont think I'm going to go with a pypes x pipe then because of the no hangers. Anybody ever used summit or pacesetter x pipe because I see their not that expensive? And now I think I got my muffler choices to 2, either dynomax super turbos or borla pro xs, and their going to be dumped to begin with.

 

[Mr. Rustypwnz]

I have nice sounding setup for dd, its longtubes, no cat 2.5" h pipe and stock muffs, sounds mean as fack at idle, but really mello at cruising speeds, at WOT, it sounds a little bit louder, but if you get behind it at wot its extremely loud, but its really quiet inside, its wierd!!!

 

[Aliate X]

my old setup, Borla XS with o/r x pipe. Quiet when cruising around, wot is something else as you can see. Best tone ever.

http://videos.streetfire.net/video/wm/7b4f7db2-e380-4aac-b238-9895011542f9.htm

 

[Darkwriter77]

As far as off-road X-pipes go, I don't think you can do much better than a Jeg's off-road X, as far as cheap cost and easy installation goes. Comes in three pieces - two downpipes and the crossover. Bolt up the two downtubes, slide on the crossover section, clamp it all down (or weld it), and you're done. Taking mine OFF the notch last weekend was a bit of a fight because it didn't wanna let go of the header flanges, but I'd sooner have that than having to constantly retighten the bugger. Got that stupid UPR X-pipe on there again right now ... ugh. I almost forgot how horribly that stupid thing fits; it bangs the cats against the crossmember (I actually had to notch about 1" of material off the front edge of the driver's side hump of the tranny crossmember just to make it clear), it moves the cat-back about 2" farther back, and it hangs so friggin' low that the cats are just dangling under the car like a giant pair of auto-testicles.

I'm not 100% positive, but I'm pretty sure that Jeg's has a similarly-designed H-pipe (three-piece unit) for around $100, if you prefer the exhaust tone of an H-pipe over an X. Otherwise, your cheapest, simplest solution would be to just score a used stock H-pipe for like $50 - they're listed all the time on Craigslist and eBay.

On the upside, at least it does quiet those Pypes Violators down enough that my neighbors don't give me frowny faces when I come and go throughout the day. Soon as I get the notch smogged, though, they'll be back to scowling at me when I bolt the off-road X back under there, again...

 

[petr1]

I have 5.0 with Trick Flow street heat kit and I try to make my car litlle quietter on low rpm (1500-2000rpm). Now I have bbk shortys, mac pro chamber and 2.25" catback with flowtech afterburners. Drone is killing me.

I'm will put pypes violator catback on next. I hope that it's beter or it will be hell on wheels . Well pypes is so cheap that if it doesn't work I'll change mufflers for magnaflow or maxflow and sell violator mufflers.

On wot it's gona be loud and thats fine but what would you think about low rpm sound levels on cruise. Afterburners are chambered mufflers.

 

[Turkey Sammich]

Isn't a good sounding quiet exhaust an oxymoron? Mine is not quiet, but when I come into my neighborhood in second or third gear at 15 mph with my foot on the brake, no one complains. It helps that the next door neighbor has a 06 gt with a catback, the one across the corner has a blown bullett with a lot of work, and yet another one has a mach one. And across the street is an R1 owner. On the other side of my townhouse, there is a vette that shows up occasionally. I love it here.

Same with mine and I have two 10's going off half the time. I have two police stations near my house. One less than a block away then another one just over a quarter of a mile away. Never had a problem. There's a 2000 GT a few houses down, another 2006 GT with full exhaust two doors over, and a red GT500 somewhere near my house that rumbles by all the time.

Do you have any sound clips?

http://www.donjohnii.com/Pages/Exhaust_Clips_Page.html

 

[PeteyAce]

whats difference in noise level between o/r h with flows 40 series vs o/r x with magna flow catback?

 

[Darkwriter77]

Magnaflows will be quieter at idle and cruise than Flows, but louder at WOT, generally speaking. Plus, Flowmaster muffs are notorious for droning, whereas straight-through type (non-chambered) mufflers like Magnaflows tend not to drone much at all (depending on factors like cruising RPM/rear gear ratio, dumps/side-exit/rear-exit tailpipes, sound insulation, etc.).

 

[bloopbloob]

+1 on the Dynomax super turbos if you want quiet at lower rpms. I have them, and they are WAY too quiet for me, but i've been told they sound pretty loud when i stomp on it. Still not enough for my liking though. I also have long tube headers and an off-road x-pipe. there is no way i could ever get in trouble for noise at low rpms with what i have. this is the only video i have, sorry, but you can get the idea of low rpm volume compared to higher rpms.
http://www.youtube.com/watch?v=CDqhuFTywAM

 

[Foxfan88]

3 chamber flows are quiet.

my bud has a 95 gt, stock headers, catless X and 3 chamber flows (pretty sure they are) with tailpipes, its QUIET. you can barely hear it at idle and it sounds real nice, has a good tone but it quiet.

 

[Turkey Sammich]

I notice when I went with the my magnaflow catback and stock catted H for my emissions test that it was VERY quiet. It was rather embarrassing, come to think about it.