Forced Induction Superchargers | Turbochargers | Intercoolers

Muffler before the turbo????

Thread Tools
 
Search this Thread
 
Old Jun 25, 2010 | 10:46 AM
  #1  
LS1DIME's Avatar
Thread Starter
Banned
iTrader: (18)
 
Joined: May 2008
Posts: 142
Likes: 0
From: Ol' Kentucky
Default Muffler before the turbo????

I may be asking a stupid question but on my S10 the downpipes on my truck are only about 1.5' long and there is just no room for even a bullet muffler, I would love for the truck to be quiet, it has a nasty kackle in the exhaust, the turbos are whining real nice while driving and I would like that to be the only thing you hear! The truck does have an x pipe in it and the exhaust is wrapped from the heads to the turbos, would running a muffler before the turbos hurt the performance any other than the heat lost? I would wrap the muffler when it is installed! Any help would be great!!
Here is the setup!

Last edited by LS1DIME; Jun 25, 2010 at 02:25 PM.
Reply
Old Jun 25, 2010 | 11:08 AM
  #2  
My2kz28's Avatar
TECH Enthusiast
iTrader: (1)
 
Joined: Apr 2005
Posts: 639
Likes: 0
From: Colorado
Default

I was actually just reading a thread about this very thing, and the consensus was to run a flow thru bullet style to not effect the pressure going to the turbo's.
Reply
Old Jun 25, 2010 | 11:37 AM
  #3  
Whitedevil666's Avatar
Teching In
 
Joined: Sep 2009
Posts: 43
Likes: 0
Default

You'll have to choose your muffler carefully. I wouldn't try it with a muffler that has any kind of packing to it. With the increased temps and pressure that crap could come loose and get blown straight into your turbo = a bad day.
Reply
Old Jun 25, 2010 | 02:27 PM
  #4  
LS1DIME's Avatar
Thread Starter
Banned
iTrader: (18)
 
Joined: May 2008
Posts: 142
Likes: 0
From: Ol' Kentucky
Default

I was wondering about a Dual inlet and Dual Outlet Magnaflow but I am pretty sure they have the packing in the case of the muffler, is that not a good choice of muffler? I am afraid a bullet will not quiet the down as much as I want it to!
Reply
Old Jun 25, 2010 | 05:09 PM
  #5  
Whitedevil666's Avatar
Teching In
 
Joined: Sep 2009
Posts: 43
Likes: 0
Default

Yes they do. The only ones I can think of right now are the Moroso spiral flow, Flowmasters, or those new Cherry Bombs. None of which are especially quiet. You could get some of those large case Flowmasters for rvs? I guess?
Reply
Old Jun 25, 2010 | 08:15 PM
  #6  
NicD's Avatar
7 Second Club
20 Year Member
Photogenic
Liked
Loved
iTrader: (7)
 
Joined: Nov 2001
Posts: 3,168
Likes: 687
From: Chandler, AZ
Default

Experimented with this on several cars with rear mounts to quiet them down and it really tends to hurt your spool time no matter what type of muffler you put on there. I would redesign the downpipe to the tailpipe section to go to opposite sides underneath so you can put mufflers after the turbo.
Reply
Old Jun 26, 2010 | 01:52 PM
  #7  
LS1DIME's Avatar
Thread Starter
Banned
iTrader: (18)
 
Joined: May 2008
Posts: 142
Likes: 0
From: Ol' Kentucky
Default

I have looked into redesigning the down pipes but my oil system is all mounted right where they would need to go, it would require some serious work!
Reply
Old Jun 27, 2010 | 02:18 AM
  #8  
camarols1's Avatar
TECH Enthusiast
iTrader: (17)
 
Joined: Oct 2006
Posts: 699
Likes: 2
From: NW Chicago Suburbs
Default

No way would I put a muffler before the turbo, WAY too much risk of material finding its way into your $$$ turbos.
I would tweak the down pipe design to allow some mufflers after the turbos, or just deal with the exhaust sound as it is.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jun 27, 2010 | 03:33 AM
  #9  
Zombie's Avatar
10 Second Club
iTrader: (2)
 
Joined: May 2004
Posts: 2,498
Likes: 4
From: Las Vegas
Default

I'd avoid a muffler before the turbo as well, mainly due to it possibly affecting spool time and the possibility of debris. If you do choose to put one before it, remember that you will be pressurizing it to 2-3x your inlet pressure. Have to make sure that it won't explode. A bullet type would probably be best as I've seen them used in this app before.
Reply




All times are GMT -5. The time now is 09:57 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE