Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

idea for high flow and very quiet exhaust. please flame.

Thread Tools
 
Search this Thread
 
Old 06-10-2004, 08:27 PM
  #1  
TECH Resident
Thread Starter
 
Stone0fFire's Avatar
 
Join Date: Jun 2003
Location: Los Angeles, CA
Posts: 862
Likes: 0
Received 1 Like on 1 Post
Default idea for high flow and very quiet exhaust. please flame.

alright, the basic idea is
long tubes
x pipe
dual reverse y pipes
and four mufflers!

what do you think?
i think if you split the exhaust by four
each of the four mufflers would recieve a less violent airflow
and so they each wouldnt be flowing as much air.
would it work?

i thought this might because when you push out more air,
it gets louder, right?
isnt that why the car is louder the more throttle you give it?
or after adding a/m cam? headers? ???

maybe i should wait till im sober..

btw, the reason for this madness is that all ive got is a GMMG on a basically stock car, and my dad is acting like a bitch already. that, and i want long tubes, but i live at his place.. so.. you see the dilemma?
Old 06-10-2004, 08:36 PM
  #2  
TECH Resident
 
16nrollininaws6's Avatar
 
Join Date: Dec 2003
Location: Land of rocks and boredom
Posts: 981
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Stone0fFire
alright, the basic idea is
long tubes
x pipe
dual reverse y pipes
and four mufflers!

what do you think?
i think if you split the exhaust by four
each of the four mufflers would recieve a less violent airflow
and so they each wouldnt be flowing as much air.
would it work?

i thought this might because when you push out more air,
it gets louder, right?
isnt that why the car is louder the more throttle you give it?
or after adding a/m cam? headers? ???

maybe i should wait till im sober..

btw, the reason for this madness is that all ive got is a GMMG on a basically stock car, and my dad is acting like a bitch already. that, and i want long tubes, but i live at his place.. so.. you see the dilemma?
What do I think? I think you're drunk
Old 06-10-2004, 08:50 PM
  #3  
TECH Enthusiast
iTrader: (3)
 
JDPZ28's Avatar
 
Join Date: Oct 2003
Location: Holly Springs, NC
Posts: 586
Likes: 0
Received 0 Likes on 0 Posts
Default


sober up!
Old 06-10-2004, 09:12 PM
  #4  
dug
Banned
iTrader: (10)
 
dug's Avatar
 
Join Date: Aug 2002
Location: Phoenix
Posts: 3,721
Likes: 0
Received 0 Likes on 0 Posts

Default

THere probably aint enough room for all that and even if you did get it to fit it will still be loud. A better idea would be to run a pair of bullets b4 the x and a pair after. Or better yet stick to your original idea and add a pair of bullets b4 the x for a total of 6 bullet mufflers.

Or maybe keep your gmmg and get the headers. THen add a pair of bullets in the ypipe and add another bullet muffler in the ipipe.

Seriously, your best bet for duals would be to have a pair of bullets b4 the x and a pair of 4x9 magnaflow mufflers after the xpipe. This will give you the best sound and might be quiet enough for the old man.
Old 06-11-2004, 04:05 AM
  #5  
TECH Regular
 
racrx's Avatar
 
Join Date: Feb 2004
Location: Golds Gym
Posts: 406
Likes: 0
Received 0 Likes on 0 Posts
Default

are you sniffing glue again???lol
Old 06-11-2004, 04:49 AM
  #6  
TECH Fanatic
iTrader: (21)
 
ApacheDrill's Avatar
 
Join Date: Nov 2002
Location: Fort Knox
Posts: 1,223
Likes: 0
Received 0 Likes on 0 Posts

Default

Just curious what the point would be? Are you trying to have the most restricted enviromentally safe f body? Im sure there is reasoning behind this madness or you are just trying to get everyone excited.
Old 06-11-2004, 07:20 AM
  #7  
jrp
SN95 Director
iTrader: (16)
 
jrp's Avatar
 
Join Date: Jul 2003
Location: Valencia, Ca
Posts: 10,755
Likes: 0
Received 4 Likes on 4 Posts

Default

heres some suggestions:

1) tell you dad to stop being a bitch
2) obey his wishes
3) move out and do what you want
Old 06-11-2004, 09:01 AM
  #8  
TECH Fanatic
 
WS6snake-eater's Avatar
 
Join Date: Mar 2003
Location: La Porte, TX
Posts: 1,839
Likes: 0
Received 0 Likes on 0 Posts

Default

put your stock exhaust back on and get an electric cutout. You'll have better flow anyways.
Old 06-11-2004, 09:41 AM
  #9  
10 Second Club
iTrader: (19)
 
offaxis's Avatar
 
Join Date: Jun 2002
Location: L-Town N.Y.
Posts: 2,062
Received 1 Like on 1 Post

Default

I think your exhaust would weigh alot man. It would really offset any hp gains you might see . I would go with a dual exhaust and a full size muffler like the dynomax superturbo ( I run this setup ) . My car is pretty quiet. I definity sneak up on people.
Old 06-11-2004, 03:22 PM
  #10  
TECH Enthusiast
 
ratio411's Avatar
 
Join Date: Jul 2002
Location: Pensacola, FL
Posts: 618
Likes: 0
Received 0 Likes on 0 Posts

Default

Yeah, my comment is late...
I was going to say that your exhaust would weigh a ton, offsetting any performance gains.

I won't give any specific ideas, but I can give some basics you could think about to design what you want...
1) Exhaust gasses shrink as they cool. Therefore you don't need as large a pipe behind the mufflers as you do at the header.
2) Smaller pipe increases speed of the gasses, larger slow the exhaust gasses.
3) Smaller pipe is louder, larger pipe is not as loud, but has lower tones that will vibrate the old man's window when you pull in at night.
4) Slower exhaust gasses are easier to muffle, you can use larger pipe near the headers where it is needed, then use even larger pipe in a short section to act as an expansion chamber, then put smaller pipe out the back to make things flow well and quietly... in theory anyway. You can also use a muffler that has internals that are one size larger than the pipes before/after the muffler. This increases muffler efficiency without reducing flow.
5) Glasspack exhaust tips can be incorporated too without much weight.

Just some exhaust principles that you can think about. (sober)
Dave
Old 06-11-2004, 07:11 PM
  #11  
TECH Senior Member
iTrader: (60)
 
Ferocity02's Avatar
 
Join Date: Apr 2003
Posts: 9,397
Likes: 0
Received 2 Likes on 2 Posts

Default

Why in the hell would you want quiet exhaust?
Old 06-11-2004, 08:05 PM
  #12  
LS1TECH Sponsor
iTrader: (2)
 
foff667's Avatar
 
Join Date: Jul 2003
Location: Clermont, FL
Posts: 7,986
Likes: 0
Received 3 Likes on 3 Posts

Default

that would probably be thee most expensive, complicated and most retarded exhaust system you could find on the market to get it to flow it would almost have to be pretty darn loud...by putting on 4 mufflers lets assume flowmasters because anything else that would actually fit would still be loud youd have a ton more weight then the stock ehxaust system or many aftermarket systems so no matter how good it did flow and it probably wont flow very well with 4 true mufflers on there it would be outweighed by the fact youve got a ton of weight sitting on the car...with my 98 s-10 we cut off nearly a full 1/2 second from 14.3's to 13.8's just by going to shorty headers, a custom 2 1/2in ypipe & a 3" catback with a bullet muffler with a dump before the axle...not only did the new exhaust system weigh like 40lbs(maybe more) less then stock it flowed alot better obviously. Theres no way around it either be loud & fast or quiet & slow lol or get yourself an electric cutout and dont tell anyone lol.
Old 06-11-2004, 08:32 PM
  #13  
TECH Resident
Thread Starter
 
Stone0fFire's Avatar
 
Join Date: Jun 2003
Location: Los Angeles, CA
Posts: 862
Likes: 0
Received 1 Like on 1 Post
Default

maybe i should take care of my tickets and warrants and then i can just have the lts and gmmg and the whole thing without too much worry.

besides me pappy,
there is the law, you know?
and in monteghetto,
i havent heard anyone as loud.

this converter isnt helping either.

im thinking if i go dual,
what about the Borla XS mufflers?
hooker maxflow would be another candidate.
this is from info i copied from a rustang site.

might as well put it up=

Results based on 5.0 Mustang Magazine December 2002 issue (page 55). Test car is a ’90 Coupe with 370 HP and 11 second potential. A number of 66 pulls were made to compile this information. Where does your muffler stack up?

The results in HP order:

1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
2.Bassani Real Street 373.7 hp/ 333.8 tq
3.Hooker Maxflow 373.5 hp/ 333 tq
4.Borla XS 373.3 hp/ 332.6 tq
5.Magnaflow 372.8 / 332.5 tq
6.MAC 372.3 hp / 331.5 tq
7.Flowtech Afterburner 372.3 hp/ 330.1 tq
8.Hooker Aerochamber 372.1 hp/ 330.4 tq
9.Bassani 372 hp/ 333.5 tq
10.Spintech 371.6 hp/ 332.2 tq
11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
12.Borla XR1 370 hp/ 334 tq
13.Flowtech Terminator 369.5 hp / 331.3 tq
14.Dynomax Ultra Flo 369.4 / 333.2 tq
15.Flowmaster 369.4 hp / 331.8 tq
16.Flowtech Warlock 366.3 hp / 325.3 tq
17.No muffs 365.2 hp / 330.1 tq

Sound Off in Quietest to Loudest (Decibels):

1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).

or..
is this old news everyone knows?
Old 06-12-2004, 07:51 AM
  #14  
TECH Senior Member
 
Colonel's Avatar
 
Join Date: Nov 2001
Location: Troy, AL
Posts: 9,246
Likes: 0
Received 2 Likes on 2 Posts

Lightbulb

Here's my idea. Pay close attention...it's pretty complicated! Ok, ready?

Stock exhaust and an electric cuttout! How's that for quiet yet high performance? For even better performance add LT headers, a 3" into 4" Y-pipe, and get rid of the cats.
Old 06-12-2004, 09:04 AM
  #15  
TECH Enthusiast
iTrader: (3)
 
jd13's Avatar
 
Join Date: Nov 2002
Location: Orlando, FL
Posts: 509
Likes: 0
Received 0 Likes on 0 Posts
Default

The Hooker catback flows very well, and is not too loud at all, even with headers and no cats.

Add cats to the mix and you've got a quiet, awesome sounding setup.
Old 06-12-2004, 12:12 PM
  #16  
Banned
iTrader: (2)
 
Wyckedcamaro's Avatar
 
Join Date: Oct 2003
Location: New York
Posts: 1,016
Likes: 0
Received 0 Likes on 0 Posts
Default

OK HERES MY SUGGESTION.. Listen to your father and SELL me the GMMG.

You will be better off with a STOCK setup if pops is complaining. And since I own my own home, I dont give a flying F&*# what people think.

so how 'bout it. 400?
Old 06-12-2004, 06:48 PM
  #17  
TECH Senior Member
iTrader: (6)
 
WILWAXU's Avatar
 
Join Date: Nov 2001
Location: League City, TX
Posts: 14,378
Likes: 0
Received 1 Like on 1 Post

Default

Buy a used SLP Dual/Dual catback with a cutout. Loud when you want to be
Old 06-13-2004, 08:30 PM
  #18  
TECH Fanatic
 
WS6snake-eater's Avatar
 
Join Date: Mar 2003
Location: La Porte, TX
Posts: 1,839
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Colonel
Here's my idea. Pay close attention...it's pretty complicated! Ok, ready?

Stock exhaust and an electric cuttout! How's that for quiet yet high performance? For even better performance add LT headers, a 3" into 4" Y-pipe, and get rid of the cats.


Hey Colonel, that was my idea 1st,,,,about 10 post up
Old 06-13-2004, 11:36 PM
  #19  
TECH Fanatic
iTrader: (2)
 
Dope's Avatar
 
Join Date: Dec 2001
Location: Wilmington, MA
Posts: 1,648
Likes: 0
Received 3 Likes on 2 Posts

Default

If you want to modify your current setup, add a bullet somewhere (i-pipe) and add resonator tips. Pretty cheap overall and will reduce the sound a good bit (but not too much, plus zero loss of HP).

Stock/other quiet exhaust + electric cutout is the way to go though. I've done it once, doing it again on my C5.

Dope
Old 06-14-2004, 05:14 AM
  #20  
TECH Regular
 
racrx's Avatar
 
Join Date: Feb 2004
Location: Golds Gym
Posts: 406
Likes: 0
Received 0 Likes on 0 Posts
Default

what Wilwaxu said, thats what I got, and it's really quiet. And roars with the c/o open.



All times are GMT -5. The time now is 10:58 PM.