LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Redoing my exhaust as well.

Thread Tools
 
Search this Thread
 
Old Nov 18, 2010 | 10:06 AM
  #1  
JP_GXP's Avatar
Thread Starter
Banned
 
Joined: Dec 2008
Posts: 1,737
Likes: 0
From: Almost Arkansas, LA
Default Redoing my exhaust as well.

My cutout died about a month ago, and my car sounds way too tame with it closed, neighbors don't like it open... So, I'm thinking full 3 inch exhaust, would it be better to maintain single to dual exhaust or just make it completely single? Also, thinking about an SLP muffler.
Reply
Old Nov 18, 2010 | 01:54 PM
  #2  
GXP25's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Aug 2009
Posts: 1,392
Likes: 0
From: Orlando, FL
Default

Looking at some exhaust info as well.
Reply
Old Nov 18, 2010 | 05:50 PM
  #3  
2005gxp's Avatar
TECH Resident
 
Joined: May 2010
Posts: 803
Likes: 0
From: Ontario, Canada
Default

ive got my dual's for sale, so dones another guy in the fs section.
Reply
Old Nov 18, 2010 | 06:11 PM
  #4  
Nick_Nasty's_GXP's Avatar
TECH Enthusiast
15 Year Member
Photogenic
iTrader: (4)
 
Joined: Dec 2009
Posts: 725
Likes: 0
From: Buffalo NY
Default

I personally like Borla mufflers. I think there is someone on LS1tech that has em. I know I saw it on youtube too. One thing about Borla tho.....$$$
Reply
Old Nov 18, 2010 | 06:16 PM
  #5  
vroom_vroom's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Nov 2010
Posts: 1,161
Likes: 1
From: vegas
Default

cut out the resonator, unless you get the headers to go with it i cant justify that kind of money for little to no power gain, just my opinion......
Reply
Old Nov 18, 2010 | 06:25 PM
  #6  
JP_GXP's Avatar
Thread Starter
Banned
 
Joined: Dec 2008
Posts: 1,737
Likes: 0
From: Almost Arkansas, LA
Default

FYI: For those who don't know, I'm only running MagnaFlow mufflers (and a burnt electric cutout... ), meaning no cat nor resonator.

I'm going for sound not performance, however, I may be getting the mani ported, headers aren't turbo compatible , part of my 3-5 year plan, was a 1 year plan but stuff happens...

http://borla.com/products/product_mu...?cat=2&type=43 Not expensive...
Reply
Old Nov 18, 2010 | 06:28 PM
  #7  
Nick_Nasty's_GXP's Avatar
TECH Enthusiast
15 Year Member
Photogenic
iTrader: (4)
 
Joined: Dec 2009
Posts: 725
Likes: 0
From: Buffalo NY
Default

Originally Posted by vroom_vroom
cut out the resonator, unless you get the headers to go with it i cant justify that kind of money for little to no power gain, just my opinion......
Our whole exhaust system is very restrictive. He's probably better off getting a custom 3" done. And with the proper tune/mods, I think he'll see a little more than "little to no power gain". Most people on here have basic bolt on's, some a little more, some a little less. But most everyone on here has a custom or Magnaflow exhaust

I'm also not a big fan of the res delete. In some cases, it's just too much drone.
Reply
Old Nov 18, 2010 | 11:50 PM
  #8  
AlabamaGuy's Avatar
TECH Addict
iTrader: (5)
 
Joined: Jun 2009
Posts: 2,802
Likes: 0
Default

I have a 3" single, mandrel bends, Dynomax Bullet, then Spintech Pro Street with it dumped into a turndown by the back wheel. It's extremely loud inside the car. I'm planning to run it on out the back and/or put some dynomat under there. BTW, I'm down to very little rasp compared to the other setups. It sounded GREAT before that bullet broke in. Now it's ok...
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

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

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Nov 19, 2010 | 04:11 AM
  #9  
DrJesus616's Avatar
Launching!
 
Joined: Oct 2010
Posts: 277
Likes: 0
From: chicagoland
Default

Originally Posted by AlabamaGuy
I have a 3" single, mandrel bends, Dynomax Bullet, then Spintech Pro Street with it dumped into a turndown by the back wheel. It's extremely loud inside the car. I'm planning to run it on out the back and/or put some dynomat under there. BTW, I'm down to very little rasp compared to the other setups. It sounded GREAT before that bullet broke in. Now it's ok...
why do you have the dynomax as well as the spintech, are they glasspack or shorty's just meant to change the sound or lessen it a bit ??

i think just getting it out the back of the car would lessen the noise ... got any videos, i would love to hear it

i can only ever really hear mine over casual listening volumes on the stereo from around 2500-3000 rpm ... if my stereos up over 50% i could probably have a cutout and not hear it ... but i always find myself muting the radio whenever i know im about to hammer it ... on ramps, ricers in the vicinity, etc

something so calming and exhilarating about the sound of a V8 squealing tires ...
Reply
Old Nov 19, 2010 | 06:17 AM
  #10  
Hawkins04's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Feb 2010
Posts: 1,467
Likes: 0
From: Lawrencevile, GA
Default

i turn my radio down to when i hammer it but i still have the stock exhaust
Reply
Old Nov 19, 2010 | 06:19 AM
  #11  
monte_with_a_LS4's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Mar 2010
Posts: 1,124
Likes: 0
From: Springfield, IL
Default

haha i turn mine down too
Reply
Old Nov 19, 2010 | 08:00 AM
  #12  
DieselPump's Avatar
Launching!
iTrader: (8)
 
Joined: Jun 2007
Posts: 214
Likes: 0
From: Canada
Default

I'm sitting at solo performance exhaust right now having a new 3" to 2.5" stainless mandrel catback put on with a pair of their mach mufflers. I'll post pics when I'm done. It's replacing a pair of borla pro xs mufflers, so I'm looking forward to comparing the sound.
Reply
Old Nov 19, 2010 | 08:18 AM
  #13  
Hawkins04's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Feb 2010
Posts: 1,467
Likes: 0
From: Lawrencevile, GA
Default

i take it you didnt like the borla mufflers?
Reply
Old Nov 19, 2010 | 08:22 AM
  #14  
DieselPump's Avatar
Launching!
iTrader: (8)
 
Joined: Jun 2007
Posts: 214
Likes: 0
From: Canada
Default

I did like the borlas, a lot, but just wanted a change. I got lots of compliments on the sound, but I've been reading a lot of good things about solo and wanted to give them a try.
Reply
Old Nov 19, 2010 | 08:49 AM
  #15  
Hawkins04's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Feb 2010
Posts: 1,467
Likes: 0
From: Lawrencevile, GA
Default

how were thy over stock?
Reply
Old Nov 19, 2010 | 09:03 AM
  #16  
JP_GXP's Avatar
Thread Starter
Banned
 
Joined: Dec 2008
Posts: 1,737
Likes: 0
From: Almost Arkansas, LA
Default

Bama's letting mods out, lol.

Not much can be louder in-car than the open cutout right under my seat.

Since, I decided to run single, what tip should I run, single or twin like it is now? Would a cutout be pointless, since it's basically already gonna be straight exhaust? My rear clip is already ruined so I'll be patching the empty spot, lol.
Reply
Old Nov 19, 2010 | 09:14 AM
  #17  
IAGXP's Avatar
Staging Lane
15 Year Member
iTrader: (1)
 
Joined: Sep 2008
Posts: 90
Likes: 0
Default

I had my res removed and some cheap thrush mufflers installed. They are knockoffs of the super 44's and it sounds great to me. It gets compliments all the time.
Reply
Old Nov 20, 2010 | 02:30 AM
  #18  
i_ammetal's Avatar
Teching In
 
Joined: Aug 2010
Posts: 37
Likes: 0
From: Denver, CO
Default

Originally Posted by IAGXP
I had my res removed and some cheap thrush mufflers installed. They are knockoffs of the super 44's and it sounds great to me. It gets compliments all the time.
I have the actual flowmaster 40's with custom DP and had the cat and res removed... and I have mixed feelings on the quality. I get compliments all the time... which surprises me. When in DoD it sounds like a friggen apache helicopter trying to mow me down but staying in V8 the throttle it has the perfect burble and tone.

I really want some proof against the HP numbers between muffler brands... flowmaster being the brand with a poor reputation.

Last edited by i_ammetal; Nov 20, 2010 at 02:04 PM.
Reply
Old Nov 20, 2010 | 11:38 PM
  #19  
gxp-miller-gxp's Avatar
TECH Enthusiast
 
Joined: Jul 2010
Posts: 528
Likes: 0
From: louisiana
Default

Originally Posted by JP_GXP
Bama's letting mods out, lol.

Not much can be louder in-car than the open cutout right under my seat.

Since, I decided to run single, what tip should I run, single or twin like it is now? Would a cutout be pointless, since it's basically already gonna be straight exhaust? My rear clip is already ruined so I'll be patching the empty spot, lol.
\
well the faster the exhaust can get out the better so a cutout would still be useful. and lol you should get a base grandprix rear bumper. SUPER SLEEPER!
Reply
Old Nov 21, 2010 | 12:18 AM
  #20  
JP_GXP's Avatar
Thread Starter
Banned
 
Joined: Dec 2008
Posts: 1,737
Likes: 0
From: Almost Arkansas, LA
Default

If it didn't have PONTIAC plastered across it, I would.
Reply



All times are GMT -5. The time now is 10:22 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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