Car is way too loud!
#1
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
iTrader: (7)
Join Date: Nov 2000
Location: michigan
Posts: 13,039
Likes: 0
Received 0 Likes
on
0 Posts
car is way to loud!
i need some suggestions on how to quiet my car down without restricting flow. it's currently a single 4" exhaust setup with a 2 chamber style spintech and no emission pieces.
#6
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
iTrader: (7)
Join Date: Nov 2000
Location: michigan
Posts: 13,039
Likes: 0
Received 0 Likes
on
0 Posts
i couldn't do that because i want the power and tone....just at a lower note if possible.
you have to remember i like to take the car out on nice nights. not to much fun when you setting off alarms and being followed by police just idling.
that is when it idles.
you have to remember i like to take the car out on nice nights. not to much fun when you setting off alarms and being followed by police just idling.
that is when it idles.
![Big Grin](https://www.thirdgen.org/forums/images/smilies/biggrin.gif)
Trending Topics
#10
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
iTrader: (7)
Join Date: Nov 2000
Location: michigan
Posts: 13,039
Likes: 0
Received 0 Likes
on
0 Posts
i need to do something in between the headers and the muffler. i couldn't really change the tips as i don't have one and would prefer it that way if possible.
pat i thought i warned you about that.....i wouldn't mind putting that old system back on to see the difference i gained as i never had the chance too.
pat i thought i warned you about that.....i wouldn't mind putting that old system back on to see the difference i gained as i never had the chance too.
#11
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (1)
Join Date: Jul 2000
Location: Carson, CA
Posts: 1,290
Likes: 0
Received 0 Likes
on
0 Posts
Car: '88 GTA, 90 Formula
Engine: 5.7 TPI, fed growth hormones
Transmission: 700r4 4u2?
Axle/Gears: 9bolt
I would vote for a high flow cat, but I've never seen one in 4". Hmmmm...
A giant cork???
Troy
So Cal
A giant cork???
![Big Grin](https://www.thirdgen.org/forums/images/smilies/biggrin.gif)
Troy
So Cal
#12
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
iTrader: (7)
Join Date: Nov 2000
Location: michigan
Posts: 13,039
Likes: 0
Received 0 Likes
on
0 Posts
lol....if it's high flow why not?
yeah i've never seen a 4" cat either and would think there must be something better. maybe i could adapt a resonator in the mid section some how. i know my gtp had one on the car but it was very restrictive.
yeah i've never seen a 4" cat either and would think there must be something better. maybe i could adapt a resonator in the mid section some how. i know my gtp had one on the car but it was very restrictive.
#13
Senior Member
Join Date: Jul 2003
Location: So Cal
Posts: 543
Likes: 0
Received 1 Like
on
1 Post
Car: 1989 IROC-Z
Engine: 350 TPI
Transmission: 700R-4
Why not just put a dynomx or magnaflow on there? They have fairly quiet mufflers that still flow good. But then again, with a 4" setup, how quiet are you planning?
#14
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
iTrader: (7)
Join Date: Nov 2000
Location: michigan
Posts: 13,039
Likes: 0
Received 0 Likes
on
0 Posts
well the engine itself is loud, i'm not expecting to have the thing go in stealth mode. i'm just trying to figure out alternative meathods to keep what i have but modify somehow to quiet the car down.
once in awhile it's all fun and games to see old ladies jump as your cruising next to them but it gets old after 20 min or so when you can't hear any more.
if gm can have 1,000 hp vettes that you can hardly hear it must be possible. maybe i'll have to go to a smaller exhaust....
once in awhile it's all fun and games to see old ladies jump as your cruising next to them but it gets old after 20 min or so when you can't hear any more.
if gm can have 1,000 hp vettes that you can hardly hear it must be possible. maybe i'll have to go to a smaller exhaust....
#15
Supreme Member
I don't get it? You want it to quiet down, but you dont want it quiet? Like others have said, you need a quieter muffler, plain and simple. An electric cutout could be used for those times you would like to "scare old ladies." If you refuse to get a different muffler then I don't know what else to tell you. Live with it then. Those vette's you speak of prolly have a quieter muffler.
#17
Member
Join Date: Feb 2004
Location: Mass
Posts: 212
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Z28
Engine: currently 350...BUILT 383 soon
Transmission: T56 w/4.10's
if you're runnin without tips, that does make the car sound louder. my friend with a 305 T/A and same flow master muffler as i have and its a lot louder without the tips.
#18
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Join Date: Mar 2001
Location: Portland, OR www.cascadecrew.org
Posts: 6,577
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
#20
Supreme Member
Join Date: Aug 2002
Location: SW Michigan
Posts: 1,498
Likes: 0
Received 0 Likes
on
0 Posts
well i to be truthful Jeff, i dont think the flowmaster setup would have been restrictive at all for your old 383. not sure about the new engine though
i think it would support an engine deep into the 11's before starting to be to small....maybe we will see next season....
but i do love how it sounds on my car
![Wink](https://www.thirdgen.org/forums/images/smilies/wink.gif)
i think it would support an engine deep into the 11's before starting to be to small....maybe we will see next season....
but i do love how it sounds on my car
![Smilie](https://www.thirdgen.org/forums/images/smilies/smile.gif)
#21
Supporter/Moderator
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (7)
Join Date: Feb 2001
Location: Cincinnati, OH
Posts: 13,290
Likes: 0
Received 405 Likes
on
309 Posts
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Just add a bullit style muffler in your I-pipe. They will not restrict your power levels hardly at all. They are desinged for drag purposes where sound levels must be enforced. Many people do this to their SLP loudmouth set-ups to tone them down a bit. The only other way would be to change mufflers or add a cat.
#22
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
iTrader: (7)
Join Date: Nov 2000
Location: michigan
Posts: 13,039
Likes: 0
Received 0 Likes
on
0 Posts
pat that exhaust cost me 900 when it was new, you had better like it.
as far as the upgrade, yeah i question its necessity as well. along with everything else on the car when i can't even drive the thing anymore.
should have left it stock.
as far as the upgrade, yeah i question its necessity as well. along with everything else on the car when i can't even drive the thing anymore.
should have left it stock.
![doh](https://www.thirdgen.org/forums/images/smilies/doh.gif)
#24
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
iTrader: (7)
Join Date: Nov 2000
Location: michigan
Posts: 13,039
Likes: 0
Received 0 Likes
on
0 Posts
any recomendations on a brand or exact type of bullet muffler.
if i can just add something in line much like a cat that would be great....don't want to make it quiet..just tone it down. there's a difference between sounding good and obnoxious. i'm way above that line right now.
if i can just add something in line much like a cat that would be great....don't want to make it quiet..just tone it down. there's a difference between sounding good and obnoxious. i'm way above that line right now.
#25
Supporter/Moderator
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (7)
Join Date: Feb 2001
Location: Cincinnati, OH
Posts: 13,290
Likes: 0
Received 405 Likes
on
309 Posts
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by Kandied91z
any recomendations on a brand or exact type of bullet muffler.
if i can just add something in line much like a cat that would be great....don't want to make it quiet..just tone it down. there's a difference between sounding good and obnoxious. i'm way above that line right now.
any recomendations on a brand or exact type of bullet muffler.
if i can just add something in line much like a cat that would be great....don't want to make it quiet..just tone it down. there's a difference between sounding good and obnoxious. i'm way above that line right now.
Dynomax Bullets
Borla Sportsman Race Muffler
#26
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Join Date: Apr 2002
Location: Southwest Florida
Posts: 4,627
Likes: 0
Received 2 Likes
on
2 Posts
Car: projects.......
I know dynomax makes them, not even to much mulla out of jegs/summit. You can do just that, get a 4" in/out and put it somewhere inline just like a cat. When you look at it you wouldn't think it'd make a difference, but I think it would deffintely be the way to go. Like you said, same tone and sound, just not as obnoxious.
later, justin...
later, justin...
#27
Banned
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (4)
Join Date: Dec 2000
Location: ILL
Posts: 861
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 Pontiac TA
Engine: 383
Transmission: 700R4
Axle/Gears: 3.70
Kandied - I have the same problem with my exhaust. I thought about putting a Dynatech cone in the 4" near the rear axle.
Flowmaster makes a single chamber 4" muffler that has a very small body and should not effect ground clearance. I am thinking about trying this.
FWIW - I have 2 Y pipes for my exhaust. I have the Mufflex off road and a custom 3" Y that has high flow cats merging into the 4" much like the Mufflex. With the cats on, the sound level at part throttle is very good.
I have run 11.60's through the cats but have not run the car with the offroad Y pipe yet.
www.geocities.com/dzperf
Flowmaster makes a single chamber 4" muffler that has a very small body and should not effect ground clearance. I am thinking about trying this.
FWIW - I have 2 Y pipes for my exhaust. I have the Mufflex off road and a custom 3" Y that has high flow cats merging into the 4" much like the Mufflex. With the cats on, the sound level at part throttle is very good.
I have run 11.60's through the cats but have not run the car with the offroad Y pipe yet.
www.geocities.com/dzperf
#28
Member
iTrader: (2)
Join Date: Apr 2003
Location: Manahawkin/Hackensack, NJ
Posts: 327
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1987 IROC-Z
Engine: 305 LB9
Transmission: 5 Speed
Axle/Gears: 3.70 Posi BW 9 Bolt
I ran the dynomax bullit mufflers with my longtubes they dont do much muffling i was setting off car alarms with a almost stock 305but in your case they might be right.
#30
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
iTrader: (7)
Join Date: Nov 2000
Location: michigan
Posts: 13,039
Likes: 0
Received 0 Likes
on
0 Posts
thanks for the suggestions everyone.....
i'm not sure about the magnaflow. i have their mufflers on my gtp and can't stand them but it could just be the application. however the shop that i deal with offers great rebates on magnaflow so maybe they'll let me try one out?
i'm not sure about the magnaflow. i have their mufflers on my gtp and can't stand them but it could just be the application. however the shop that i deal with offers great rebates on magnaflow so maybe they'll let me try one out?
![Smilie](https://www.thirdgen.org/forums/images/smilies/smile.gif)
#31
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Join Date: Jan 2002
Location: Kona, Hawaii / Redlands, CA
Posts: 1,341
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91' RS
Engine: Built 355
Transmission: Probuilt 700r4
I got an idea...
Run a 4 inch dynomax bullet muffler somwhere in the middle of the intermediate pipe, acting as a resonator.
That should quiet it down 2-3 db's.
I should sound very similiar to what you have now, just quieter.
That should quiet it down 2-3 db's.
I should sound very similiar to what you have now, just quieter.
#32
Supporter/Moderator
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (7)
Join Date: Feb 2001
Location: Cincinnati, OH
Posts: 13,290
Likes: 0
Received 405 Likes
on
309 Posts
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: I got an idea...
Originally posted by 330hp_91RS
Run a 4 inch dynomax bullet muffler somwhere in the middle of the intermediate pipe, acting as a resonator.
That should quiet it down 2-3 db's.
I should sound very similiar to what you have now, just quieter.
Run a 4 inch dynomax bullet muffler somwhere in the middle of the intermediate pipe, acting as a resonator.
That should quiet it down 2-3 db's.
I should sound very similiar to what you have now, just quieter.
#33
Senior Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Join Date: Nov 2000
Location: Indpls IN US
Posts: 812
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Z28
Engine: Forged 383
Transmission: Pro-built 700R4
Re: I got an idea...
Originally posted by 330hp_91RS
Run a 4 inch dynomax bullet muffler somwhere in the middle of the intermediate pipe, acting as a resonator.
That should quiet it down 2-3 db's.
I should sound very similiar to what you have now, just quieter.
Run a 4 inch dynomax bullet muffler somwhere in the middle of the intermediate pipe, acting as a resonator.
That should quiet it down 2-3 db's.
I should sound very similiar to what you have now, just quieter.
#34
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Join Date: May 2002
Location: cali
Posts: 1,764
Likes: 0
Received 0 Likes
on
0 Posts
Car: 84z, 65 elcamino
Engine: l69 and a hyped up sbc in the camino
Transmission: t5 m21
Axle/Gears: 373s 411s
told u 4 inches would be over kill. never listen to the smart azn kid with common sense u
jp. i would just cap it or shove some steelwool in it. that will silence it for about 2 weeks if u run it everyday. so for u prob about 100 or so miles.
![idiot](https://www.thirdgen.org/forums/images/smilies/idiot.gif)
![Wink](https://www.thirdgen.org/forums/images/smilies/wink.gif)
#35
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
FIrst I started with dual exhaust, flowtech "raptors" as mufflers. I was not satisfied with the tone, but i was somewhat satisfied with the noise level.
I figured it was time to change to dual 40 series flowmasters, i was very satisfied with the tone but they were so obnoxiouselly loud that i had to do something about it.
changed over to single 3" flowmaster 80 series (quiestest i could find) cat-back (no cat) I was satisfied with the noise level (very quiet) until my cam/intake swap. now its noisy as all crap again.
My next idea, to regain flow and not the noise, is dual exhaust, 2 mufflers per side. some free flowing dynomax mufflers (3" in/out) stacked together, 2 per side, should do the trick.
I figured it was time to change to dual 40 series flowmasters, i was very satisfied with the tone but they were so obnoxiouselly loud that i had to do something about it.
changed over to single 3" flowmaster 80 series (quiestest i could find) cat-back (no cat) I was satisfied with the noise level (very quiet) until my cam/intake swap. now its noisy as all crap again.
My next idea, to regain flow and not the noise, is dual exhaust, 2 mufflers per side. some free flowing dynomax mufflers (3" in/out) stacked together, 2 per side, should do the trick.
#36
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Join Date: May 2002
Location: cali
Posts: 1,764
Likes: 0
Received 0 Likes
on
0 Posts
Car: 84z, 65 elcamino
Engine: l69 and a hyped up sbc in the camino
Transmission: t5 m21
Axle/Gears: 373s 411s
how is 40 series to loud. you sound like my dad. personally on the elco i have delta 40s 2.5 in dia or 2.25 i forget have to go measure. 80 series to loud. know i know your old
if i were you i would go buy a bmw or maybe a honda. those are quiet. if you want to quiet down alot id go with 3 chamber exhaust and then weld in some silencers. if you want hi flow your gonna get loud exhaust. you get one or the other not both. im sorry to say you cannot have your cake and eat it to
![Stick Out Tongue](https://www.thirdgen.org/forums/images/smilies/tongue.gif)
![Cool](https://www.thirdgen.org/forums/images/smilies/cool.gif)
#38
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Originally posted by jocww
how is 40 series to loud. you sound like my dad. personally on the elco i have delta 40s 2.5 in dia or 2.25 i forget have to go measure. 80 series to loud. know i know your old
if i were you i would go buy a bmw or maybe a honda. those are quiet. if you want to quiet down alot id go with 3 chamber exhaust and then weld in some silencers. if you want hi flow your gonna get loud exhaust. you get one or the other not both. im sorry to say you cannot have your cake and eat it to
how is 40 series to loud. you sound like my dad. personally on the elco i have delta 40s 2.5 in dia or 2.25 i forget have to go measure. 80 series to loud. know i know your old
![Stick Out Tongue](https://www.thirdgen.org/forums/images/smilies/tongue.gif)
![Cool](https://www.thirdgen.org/forums/images/smilies/cool.gif)
have you ever heard true dual 2 chamber 40 series flowmaster mufflers, 3" all the way around, behind a 406 small block idling at 1000 rpms, with a 4000rpm stall converter, a big cam and big heads?
everytime i left a stoplight everyone around me thought i was racing them. im telling you, even before i stepped on the gas it was shaking the fenders of the cars next to me.
#40
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Originally posted by IROCZTWENTYGR8
I would never change my exhaust if it was like that! Especially since I have heard a similar setup. Nothing sounds better than exhaust like that.
How did you run it on a Third exactly? Did the tailpipes still come out in the stock location?
I would never change my exhaust if it was like that! Especially since I have heard a similar setup. Nothing sounds better than exhaust like that.
How did you run it on a Third exactly? Did the tailpipes still come out in the stock location?
Very simply, longtubes to some home bent pipe to clear the Xmember, then just a simple straight pipe back a small bend and it exits before the tires. and ground clearance was same as the 3" catback, actually. this pic is during the tranny swap, after i built it and put in the converter.
#41
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Join Date: May 2002
Location: cali
Posts: 1,764
Likes: 0
Received 0 Likes
on
0 Posts
Car: 84z, 65 elcamino
Engine: l69 and a hyped up sbc in the camino
Transmission: t5 m21
Axle/Gears: 373s 411s
king post some pics of the sides like how people would see it if you were cruising by. thanks
#43
Senior Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (2)
Join Date: Sep 2002
Location: Central Va.
Posts: 766
Likes: 0
Received 0 Likes
on
0 Posts
Car: 82' Z28 IROC Clone (SOLD)
Engine: 355
Transmission: Built TH-350
Axle/Gears: 3.73 Moser 12 bolt
Im running 3 inch with just a high-flow cat and a bullet muffler and split to duals out the back...At idle it is noticible but not loud, But when you get on it it screams, But you can still keep it quiet....Plus for $35 you cant beat the price!
#44
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
iTrader: (7)
Join Date: Nov 2000
Location: michigan
Posts: 13,039
Likes: 0
Received 0 Likes
on
0 Posts
alright so collectively out of 40 some odd posts we can only come up with adding a bullet style muffler as an intermediate or some sort of resinator but that's the best idea beyond changing the muffler and actual size of the pipe dia. correct?
how are these concept vehicles putting out 800+ rwhp and you can't hear them coming then....?
how are these concept vehicles putting out 800+ rwhp and you can't hear them coming then....?
#45
Senior Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (2)
Join Date: Sep 2002
Location: Central Va.
Posts: 766
Likes: 0
Received 0 Likes
on
0 Posts
Car: 82' Z28 IROC Clone (SOLD)
Engine: 355
Transmission: Built TH-350
Axle/Gears: 3.73 Moser 12 bolt
how are these concept vehicles putting out 800+ rwhp and you can't hear them coming then....?
#46
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
iTrader: (7)
Join Date: Nov 2000
Location: michigan
Posts: 13,039
Likes: 0
Received 0 Likes
on
0 Posts
resonators yes......quiet mufflers.....yes and no. most of the setups are off the shelf although they do have custom pieces added for sound dampning. i'm going to try and contact them for some more info on it, i'll let everyone know what i find out.
#47
Junior Member
Join Date: Apr 2004
Location: Erie, PA
Posts: 40
Likes: 0
Received 0 Likes
on
0 Posts
Car: 88 IrocZ
Engine: 350 Tuned Port
Transmission: 700R4 on its way out....
Originally posted by HiTech5
[B]Flowmaster makes a single chamber 4" muffler that has a very small body and should not effect ground clearance. I am thinking about trying this.[B]
[B]Flowmaster makes a single chamber 4" muffler that has a very small body and should not effect ground clearance. I am thinking about trying this.[B]
*eric*
#48
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Join Date: May 2002
Location: cali
Posts: 1,764
Likes: 0
Received 0 Likes
on
0 Posts
Car: 84z, 65 elcamino
Engine: l69 and a hyped up sbc in the camino
Transmission: t5 m21
Axle/Gears: 373s 411s
stuff some resin or fiberglass or steel wool in the muffler that will quiet it down alot
#49
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Join Date: Oct 2001
Location: Louisville, Ky
Posts: 3,155
Likes: 0
Received 2 Likes
on
2 Posts
Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
that is a SHOW car and has to go all out with everything... leave it loud man!! but id say build a little less powerful engine, id say thats your biggest noise maker
![Wink](https://www.thirdgen.org/forums/images/smilies/wink.gif)
#50
Senior Member
Join Date: Mar 2002
Location: Phoenix, AZ
Posts: 857
Likes: 0
Received 1 Like
on
1 Post
Car: '82 Z28
Engine: 350HO
Transmission: M4
bullet mufflers make a bigger difference than you think. it will be more than 2-3 db. they will quiet the idle/cruise down a lot.
though bullet mufflers don't make much difference WOT.
http://store.summitracing.com/partde...rt=WLK%2D24217
would work well.
though bullet mufflers don't make much difference WOT.
http://store.summitracing.com/partde...rt=WLK%2D24217
would work well.
Last edited by scottland; 05-08-2004 at 01:16 AM.