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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 07-06-2009, 04:29 PM   #1
LDGn63
 
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Question Dyno numbers for axle-backs?

anybody seen real Dyno numbers for axle-backs all by themselves?
NOT used in conjunction with anything else like a tune, headers, intake... JUST the muffs?
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Why oh Why?
Windshield=10" vertical
mirror= 3 7/8" (that's almost 4") vertical
that means that the mirror is 38.75% the size of the vertical windshield...
it sure seems like the ratio could be better... just sayin....

our collective MIRROR patch:
http://www.camaro5.com/forums/showthread.php?t=24612
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Old 07-06-2009, 04:43 PM   #2
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Yes I would be interested in this as well. Im looking at the Borla axle back
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Old 07-08-2009, 09:35 AM   #3
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Quote:
Originally Posted by 2010SS6SPD View Post
Yes I would be interested in this as well. Im looking at the Borla axle back
im leaning magnaflow or SLP LoudmouthII
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Why oh Why?
Windshield=10" vertical
mirror= 3 7/8" (that's almost 4") vertical
that means that the mirror is 38.75% the size of the vertical windshield...
it sure seems like the ratio could be better... just sayin....

our collective MIRROR patch:
http://www.camaro5.com/forums/showthread.php?t=24612
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Old 07-08-2009, 12:12 PM   #4
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I dont think its going to be much of a gain at all, with just an axle back. 2-4hp maybe
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Old 07-08-2009, 12:25 PM   #5
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From pictures we have seen, the stockers flow pretty well ... I'd think of an axelback as more for sound preference than any real power gain. I'd say 5 or so at best.

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Old 07-08-2009, 01:34 PM   #6
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Quote:
Originally Posted by SMGSS View Post
I dont think its going to be much of a gain at all, with just an axle back. 2-4hp maybe
Quote:
Originally Posted by Crowley View Post
From pictures we have seen, the stockers flow pretty well ... I'd think of an axelback as more for sound preference than any real power gain. I'd say 5 or so at best.

Crowley
Cat-back and AXLE-back just looks like a difference in a few feet of tubing to me.
how can the HP #'s be THAT different between the axle vs. cat?

i need an education. what am i missing? (talking LS3)
Thanks!
__________________
Why oh Why?
Windshield=10" vertical
mirror= 3 7/8" (that's almost 4") vertical
that means that the mirror is 38.75% the size of the vertical windshield...
it sure seems like the ratio could be better... just sayin....

our collective MIRROR patch:
http://www.camaro5.com/forums/showthread.php?t=24612
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Old 07-08-2009, 01:52 PM   #7
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I say little or no HP increase on Axle-back. Exhaust flow is the around the same except with muff delete. But, I'm willing to bet, with everything stock, you can get another 15 RWHP with a dyno tune.
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Old 07-08-2009, 02:09 PM   #8
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Quote:
Originally Posted by LDGn63 View Post
Cat-back and AXLE-back just looks like a difference in a few feet of tubing to me.
how can the HP #'s be THAT different between the axle vs. cat?

i need an education. what am i missing? (talking LS3)
Thanks!
I think you would be right in saying not much gain from a catback as well. You will see the largest gains from the midsection (cats) forward to the engine (headers).

Crowley
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Old 07-08-2009, 04:04 PM   #9
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Quote:
Originally Posted by Crowley View Post
I think you would be right in saying not much gain from a catback as well. You will see the largest gains from the midsection (cats) forward to the engine (headers).

Crowley
see post #23
http://www.camaro5.com/forums/showth...ight=magnaflow

15HP/18TQ... nothing to laugh at... but who knows whats real?

i'm just trying to figure out if a FULL catback makes ANY sense when the factory stuff is bent so well.

Thanks so much for the input folks!
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Why oh Why?
Windshield=10" vertical
mirror= 3 7/8" (that's almost 4") vertical
that means that the mirror is 38.75% the size of the vertical windshield...
it sure seems like the ratio could be better... just sayin....

our collective MIRROR patch:
http://www.camaro5.com/forums/showthread.php?t=24612
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Old 07-08-2009, 04:09 PM   #10
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Quote:
Originally Posted by LDGn63 View Post
see post #23
http://www.camaro5.com/forums/showth...ight=magnaflow

15HP/18TQ... nothing to laugh at... but who knows whats real?

i'm just trying to figure out if a FULL catback makes ANY sense when the factory stuff is bent so well.

Thanks so much for the input folks!
What you need to know there is that I think that kit includes a catted xpipe. So you do replace the cats, it isn't just a catback system. If this is incorrect, then I am sorry but I believe this is the case and I'm thinking that is where most of that hp and tq came from.

Thanks,
Crowley
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Old 07-08-2009, 04:33 PM   #11
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i think its a "resonated" x-pipe and not catted.

"MagnaFlow's Stainless Steel Street Series Cat-Back for the 2010 Camaro SS 6.2L V8 Features a resonated X-Pipe, 11" Rear Oval Mufflers and Dual 4" Polished Stainless Steel Tips."

if you scroll up in the linked thread i believe the pics show an exhaust that would be AFTER CATS... i think... LOL (but what do i know)

i guess i could e-mail or call the companies! now there's and idea! (of course i would really rather have real world dyno runs on member's cars)
__________________
Why oh Why?
Windshield=10" vertical
mirror= 3 7/8" (that's almost 4") vertical
that means that the mirror is 38.75% the size of the vertical windshield...
it sure seems like the ratio could be better... just sayin....

our collective MIRROR patch:
http://www.camaro5.com/forums/showthread.php?t=24612
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Old 07-08-2009, 05:38 PM   #12
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Quote:
Originally Posted by LDGn63 View Post
i think its a "resonated" x-pipe and not catted.

"MagnaFlow's Stainless Steel Street Series Cat-Back for the 2010 Camaro SS 6.2L V8 Features a resonated X-Pipe, 11" Rear Oval Mufflers and Dual 4" Polished Stainless Steel Tips."

if you scroll up in the linked thread i believe the pics show an exhaust that would be AFTER CATS... i think... LOL (but what do i know)

i guess i could e-mail or call the companies! now there's and idea! (of course i would really rather have real world dyno runs on member's cars)
Lol .. it would be good to know either way as now I am confused

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Old 07-08-2009, 06:20 PM   #13
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The MAgnaflow is after the cats. The problem with Dynos is you never really know what variables are making the power.

There are a lot of people going very fast with the stock cans in the back. The only reason I am going to replace the exhaust is for sound. I do think you make power but hell, the LSX motors make more power if you look at them wrong.
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