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

True Duals exhaust/torque arm problems

Thread Tools
 
Search this Thread
 
Old Nov 23, 2017 | 06:09 AM
  #1  
BlackedOut LS1's Avatar
Thread Starter
TECH Apprentice
15 Year Member
iTrader: (4)
 
Joined: Jul 2005
Posts: 304
Likes: 9
From: New Orleans
Default True Duals exhaust/torque arm problems

So i have two issues.....I recently installed a set of Speed Engineering True duals and UMI's torque arm and relocation bracket. The bracket initially didn't fit bc of the welded on drive shaft loop mounting points hitting the exhaust. My exhaust guy had to cut off loops mounting points but the bracket still presses up against the exhaust pretty tight and its causing a lot of vibration in the vehicle now.

Secondly, this exhaust is soooo loud in the car the drone is making it almost un-drive able for me. The lack of back pressure is an issue also bc the throttle response at low rpm is sluggish now. Can i tame those issues with CATS and different mufflers? Anyone have any suggestion?
Reply
Old Nov 23, 2017 | 08:34 AM
  #2  
big hammer's Avatar
10 Second Club
15 Year Member
Top Answer: 1
 
Joined: May 2009
Posts: 3,427
Likes: 226
From: over dere
Default

Back pressuuuuuuuuuure!
Reply
Old Nov 23, 2017 | 08:45 AM
  #3  
BlackedOut LS1's Avatar
Thread Starter
TECH Apprentice
15 Year Member
iTrader: (4)
 
Joined: Jul 2005
Posts: 304
Likes: 9
From: New Orleans
Default

Happy Thanks Giving to you sir! But what about the back pressure, should I add it back with CATS, is it tunable?
Reply
Old Nov 23, 2017 | 09:36 AM
  #4  
Darth_V8r's Avatar
Moderator
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jul 2014
Posts: 10,450
Likes: 1,873
From: My own internal universe
Default

I cut the bullets off mine and installed DBX flowmasters. Knocked it down a good bit. I have no cats and throttle response is fine. Cats might help kill the drone. So would resonators to break up that straight pipe length.

What is your dynamic compression? That has a lot to do with throttle response. Also if you are a stick shift, what clutch? Guys will throw a ls7 on cause it is cheap but the weight can make the motor lazy
Reply
Old Nov 23, 2017 | 11:10 AM
  #5  
BlackedOut LS1's Avatar
Thread Starter
TECH Apprentice
15 Year Member
iTrader: (4)
 
Joined: Jul 2005
Posts: 304
Likes: 9
From: New Orleans
Default

Originally Posted by Darth_V8r
I cut the bullets off mine and installed DBX flowmasters. Knocked it down a good bit. I have no cats and throttle response is fine. Cats might help kill the drone. So would resonators to break up that straight pipe length.

What is your dynamic compression? That has a lot to do with throttle response. Also if you are a stick shift, what clutch? Guys will throw a ls7 on cause it is cheap but the weight can make the motor lazy
I think i'm running stock or close to stock compression, throttle response before the new exhaust was awesome. You suggest high flow cats or standard?
Reply
Old Nov 23, 2017 | 11:23 AM
  #6  
Darth_V8r's Avatar
Moderator
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jul 2014
Posts: 10,450
Likes: 1,873
From: My own internal universe
Default

High flow
Reply




All times are GMT -5. The time now is 05:35 AM.

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