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

Will a Borla X-r1 outflow...?

Thread Tools
 
Search this Thread
 
Old Oct 18, 2007 | 10:49 PM
  #1  
Detoxx03's Avatar
Thread Starter
10 Second Club
iTrader: (14)
 
Joined: Jan 2007
Posts: 7,336
Likes: 74
From: Woodward Avenue
Default Will a Borla X-r1 outflow...?

The LM2 bullet muffler? If I get one will it make a noticeable hp difference?
Reply
Old Oct 19, 2007 | 02:27 AM
  #2  
Ping King's Avatar
TECH Fanatic
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (20)
 
Joined: Feb 2003
Posts: 1,636
Likes: 9
From: PA
Default

XR1 is straight through too. just more packing material to absorb sound.
Reply
Old Oct 19, 2007 | 11:06 AM
  #3  
Adrenaline_SS's Avatar
On The Tree
iTrader: (4)
 
Joined: Mar 2007
Posts: 115
Likes: 0
From: Southwest VA
Default

Originally Posted by Detoxx03
The LM2 bullet muffler? If I get one will it make a noticeable hp difference?
I don't have any dyno proof, but it is my understanding that yes it will. The Borla XR-1 is a true 3" core where as the LM2 bullet necks down. Additionally ite XR-1 has dividers in the middle of the core for sound baffling, but it also produces a scavaging effect and it is supposed to outflow straight pipe.
I put one on my LM2 and didn't feel a lot of difference ( did sound a lot better though), but I'm on stock manifolds- you will probably notice a lot more having LTs and a cam. I personally think the LM2 is a cstriction poitn on these systems. Why have a 3" intermediate pipe that goes over tha axel if the muffler is smaller. Probably not a big deal for most, but with LT and a cam -maybe
BTW, I'm acually selling my XR-1- only has about 300 miles on it and has been on the car for 2 mo. I want to go with a quieter system
PM me for details if you are interested.
Reply
Old Oct 19, 2007 | 11:32 AM
  #4  
Detoxx03's Avatar
Thread Starter
10 Second Club
iTrader: (14)
 
Joined: Jan 2007
Posts: 7,336
Likes: 74
From: Woodward Avenue
Default

Well since that debate is somewhat settled I also heard it cuts down on the rasp and gives the lm systems a quieter deeper muscle sound. Tried the search and didn't come up with anything so is this true or would the magnaflow bullet be better?
Reply
Old Oct 19, 2007 | 12:17 PM
  #5  
hotrod7687's Avatar
Staging Lane
 
Joined: Feb 2007
Posts: 96
Likes: 0
From: Nacogdoches, TX
Default

Originally Posted by Detoxx03
Well since that debate is somewhat settled I also heard it cuts down on the rasp and gives the lm systems a quieter deeper muscle sound. Tried the search and didn't come up with anything so is this true or would the magnaflow bullet be better?
The magnaflow worked really well for me, and its cheaper than the borla. I put it inline with the muffler I already had, it toned down the noise and made it deeper.

Heres a vid before and after vid:
http://www.youtube.com/watch?v=lAJgx9hfq_Q
Reply
Old Oct 19, 2007 | 04:16 PM
  #6  
Detoxx03's Avatar
Thread Starter
10 Second Club
iTrader: (14)
 
Joined: Jan 2007
Posts: 7,336
Likes: 74
From: Woodward Avenue
Default

Thanks for the vid. Does it still flow good
Reply
Old Oct 19, 2007 | 04:18 PM
  #7  
Tootall's Avatar
TECH Senior Member
20 Year Member
iTrader: (78)
 
Joined: Jun 2002
Posts: 5,076
Likes: 2
From: League City, Tx
Default

click my sig if you're wanting to hear a Borla + LTs, catless
Reply
Old Oct 19, 2007 | 04:24 PM
  #8  
hotrod7687's Avatar
Staging Lane
 
Joined: Feb 2007
Posts: 96
Likes: 0
From: Nacogdoches, TX
Default

Originally Posted by Detoxx03
Thanks for the vid. Does it still flow good

I didnt notice and difference in power. The magnaflow looks like a straight pipe with lots of little holes drilled into it. I dont see how it could hurt flow at all.
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




All times are GMT -5. The time now is 10:13 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