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

Magnaflow

Thread Tools
 
Search this Thread
 
Old Feb 16, 2005 | 03:22 AM
  #1  
strictly93z's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2004
Posts: 74
Likes: 0
Default Magnaflow

Anyone got some info on performance gains with a magnaflow cat back? wut about with headers: short or long?
Reply
Old Feb 16, 2005 | 09:14 AM
  #2  
2001 White Ws6's Avatar
TECH Enthusiast
iTrader: (1)
 
Joined: Mar 2003
Posts: 575
Likes: 0
From: DFW, TX.
Default

I don't have any base numbers when my car was stock. With my magnaflow c/b, slp airlid, and converter i put down 286-312. When i installed QTP long tubes and ory my numbers jumped up to 310-343 with no tuning. Both of these numbers where at the same place and dyno.
Reply
Old Feb 16, 2005 | 11:43 AM
  #3  
Diolar Magnum's Avatar
RIP April 14, 2008
 
Joined: Aug 2004
Posts: 1,603
Likes: 0
From: the land where cars repeatedly hit my bumper when I'm in the store...
Default

Originally Posted by 2001 White Ws6
I don't have any base numbers when my car was stock. With my magnaflow c/b, slp airlid, and converter i put down 286-312. When i installed QTP long tubes and ory my numbers jumped up to 310-343 with no tuning. Both of these numbers where at the same place and dyno.

are you sure you only put down 286? that sounds way low to me with a catback and lid. I put down 334/355 with magnaflow, MTI lid, FRA, HiFlow Filter! And mine is a 98 A4.
Reply
Old Feb 16, 2005 | 12:23 PM
  #4  
No Juice's Avatar
TECH Addict
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (11)
 
Joined: Jan 2003
Posts: 2,502
Likes: 19
From: Minnesota Corn Fields
Default

#'s in sig
Reply
Old Feb 16, 2005 | 02:27 PM
  #5  
2001 White Ws6's Avatar
TECH Enthusiast
iTrader: (1)
 
Joined: Mar 2003
Posts: 575
Likes: 0
From: DFW, TX.
Default

Originally Posted by 1998camaroz28
are you sure you only put down 286? that sounds way low to me with a catback and lid. I put down 334/355 with magnaflow, MTI lid, FRA, HiFlow Filter! And mine is a 98 A4.
Dyno's put out different ratings. You can't tell me that a car with the same engine and same mods differ 20-30hp. I would say your numbers are too high and IMO are not beleivable for a 98 a4 with c/b and lid.

My rwhp is low due to the higher stall torque converter.
Reply
Old Feb 16, 2005 | 02:47 PM
  #6  
Diolar Magnum's Avatar
RIP April 14, 2008
 
Joined: Aug 2004
Posts: 1,603
Likes: 0
From: the land where cars repeatedly hit my bumper when I'm in the store...
Default

Originally Posted by 2001 White Ws6
Dyno's put out different ratings. You can't tell me that a car with the same engine and same mods differ 20-30hp. I would say your numbers are too high and IMO are not beleivable for a 98 a4 with c/b and lid.

My rwhp is low due to the higher stall torque converter.
oh oh I didnt know stall converters did that. yeah man I know its weird, but she dynojetted those #s SAE corrected! I am thinking maybe the guy I bought it from did some stuff I dunno about?
Reply
Old Feb 16, 2005 | 02:52 PM
  #7  
DeViOuSwOn's Avatar
On The Tree
 
Joined: Dec 2004
Posts: 115
Likes: 0
From: USA
Default

From what I have read from different Forums, it seems that gains from cat-backs and Lt's are about the same. The difference seems to be with different dyno's and different cars.
TJ
Reply
Old Feb 16, 2005 | 02:54 PM
  #8  
2001 White Ws6's Avatar
TECH Enthusiast
iTrader: (1)
 
Joined: Mar 2003
Posts: 575
Likes: 0
From: DFW, TX.
Default

Yea i suppose the general consensus is that a higher stall converter will take around 10-20 rwhp. Depends on effeciency and other things i don't know about.

I myself expected higher numbers but the shop it was dynoed at said it was fairly good. A very reputable shop here in TX. (RPMotorsports)
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 Feb 16, 2005 | 04:18 PM
  #9  
slow ride's Avatar
Launching!
 
Joined: Sep 2004
Posts: 246
Likes: 0
Default

Stock 2002 M6 312/332 Added lid,mangaflow,predator,ported T/B 345/356 added Kooks 1 3/4 LT's and 363/370.
Reply
Old Feb 16, 2005 | 06:39 PM
  #10  
Flawless02SS's Avatar
TECH Fanatic
iTrader: (9)
 
Joined: Sep 2004
Posts: 1,827
Likes: 14
From: Canon, GA
Default

2002 SS, M6 just lid 312/327, added Magnaflow, tb bypass and k&n 336/349
Reply
Old Feb 16, 2005 | 07:40 PM
  #11  
2001 White Ws6's Avatar
TECH Enthusiast
iTrader: (1)
 
Joined: Mar 2003
Posts: 575
Likes: 0
From: DFW, TX.
Default

Originally Posted by nharrison02ss
2002 SS, M6 just lid 312/327, added Magnaflow, tb bypass and k&n 336/349
You really think that a magnaflow c/b, tb bypass and a k&n added 24rwhp - 22rwtq?
Reply
Old Feb 16, 2005 | 09:54 PM
  #12  
Flawless02SS's Avatar
TECH Fanatic
iTrader: (9)
 
Joined: Sep 2004
Posts: 1,827
Likes: 14
From: Canon, GA
Default

Originally Posted by 2001 White Ws6
You really think that a magnaflow c/b, tb bypass and a k&n added 24rwhp - 22rwtq?
Had too, dyno was SAE corrected and the dyno dont lie!!
Reply
Old Feb 16, 2005 | 10:35 PM
  #13  
slow ride's Avatar
Launching!
 
Joined: Sep 2004
Posts: 246
Likes: 0
Default

Originally Posted by strictly93z
Anyone got some info on performance gains with a magnaflow cat back? wut about with headers: short or long?
Magnaflow claims 18.4 HP on a stock SS
Reply




All times are GMT -5. The time now is 04:14 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