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Old 08-10-2009, 05:18 PM   #18
tcamp
 
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Think I found the exhaust...it is:
Part # 12468 Magnaflow - Performance Muffler 5" x 8"

http://www.magnaflow.com/02product/s...e=main&id=8203

Last edited by tcamp; 08-10-2009 at 05:48 PM.
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Old 08-10-2009, 06:41 PM   #19
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I was thinking about adding in the AR25's right before the tips, but I think she sounds pretty good right now.

The reason he did the dual in dual out was because he did a full custom job on an SS with longtube headers and high flow-cats with this same muffler and str8 pipe from there back and she sounded wicked, but I wasn't trying to get the same sound especially out of a V6. He did it for cheap though and I thought the AR25's were too raspy for me and especially my wife.

I'll have the part# tomorrow morning and I'll post it. If it is a True-X I might have them rip out the H-pipe when I get some high-flow cats.

Question for you guys, being that we have 4 cats and 4 O2 sensors can I install 2-high flow cats and still pass inspection. Also will having only two cats mess with the ECM with the placment of the O2 sensors. 1 sensor is before the first cat and one emmediatlly after it, right before the second cat.
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Old 08-10-2009, 07:16 PM   #20
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From what I understand the stock cats are pretty damn good. you may get 1-2 hp more with after market and spend a bunch of money doing so.
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Old 08-10-2009, 09:12 PM   #21
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Quote:
Originally Posted by rolnslo View Post
With the AR25's installed, it looks like you replaced the stock resonators rather than adding the AR25 in place of the stock mufflers. If you were trying to mimic the sound of "scrming"'s V6 with the AR25's, maybe that's why you weren't happy with the sound.

http://www.camaro5.com/forums/showthread.php?t=31844
Think you are right... It very hard to judge this stuff just by listening to videos... but I don't think my sound is quite so harsh/loud at start up /idle... I'm thinking those stock resonators mid-stream really mellow things out...

@suavecito1177 - thanks for sharing YOUR experiment!!!
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Old 08-11-2009, 12:33 AM   #22
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Hey Sauvecito, I did a little more digging around on that muffler and it does appear to have a built in X pipe. Does anyone know what the consequence of having an X Pipe after an H pipe is? Is there a consequence?

I also read that if you are going to install an X pipe it is important to have it the correct distance from the engine so that the firing order causes the exhaust to cross at the right times. It can actually be counterproductive to have an X pipe too far back.

Can anyone smarter than me verify this?
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Old 08-11-2009, 03:00 PM   #23
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OMG !!

Very nice sound
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Old 08-11-2009, 03:28 PM   #24
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Scrming - How raspy is yours around climb-to-cruise from around 1500 to 3000 RPM ? I drove a Magnum Hemi with a Borla Catback system a few years ago and at idle it sounded great and when 'getting on it' it sounded great, but at lower speeds and climbs, sitting in the backseat was awful. I am just about sold on your install, but don't want that overly raspy vibration in the car at times, that just makes talking or music unheard. Can you give more detail on your sound above idle ?
Thanks
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Old 08-11-2009, 03:35 PM   #25
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Can't you lose performance with magnaflow?
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Old 08-11-2009, 05:08 PM   #26
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Quote:
Originally Posted by bluecamaroguy View Post
Can't you lose performance with magnaflow?
?? Magnaflow is certainly better than stock. I suppose if you installed magnaflow and had a hole in the exhaust or something it could be worse...
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Old 08-11-2009, 06:49 PM   #27
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Quote:
Originally Posted by calflan View Post
Scrming - How raspy is yours around climb-to-cruise from around 1500 to 3000 RPM ? I drove a Magnum Hemi with a Borla Catback system a few years ago and at idle it sounded great and when 'getting on it' it sounded great, but at lower speeds and climbs, sitting in the backseat was awful. I am just about sold on your install, but don't want that overly raspy vibration in the car at times, that just makes talking or music unheard. Can you give more detail on your sound above idle ?
Thanks
I really do need to make an in cabin video... hmmmmmm
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Old 08-11-2009, 09:07 PM   #28
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suave ..... that wud be sick if you can get the model number for the magnaflow exhaust. the first video where you have the aero turbine resonators. i really like that and it doesnt sound like it wud be expensive.
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Old 08-11-2009, 09:28 PM   #29
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I just got off work guys, and the shop is closed, but I will head over there first thing tomorrow morning and get it for you. I need to get my old parts back anyways. The install was pretty cheap about a bill for the res. and another 200 for the labor and 60 for the tips. I think the cheapest axle-back out is around 400, but that still leaves you with 2.25" pipe from your h-pipe to the axle-back and that didn't sit well with me. More CFM more HP. Same with the intake. G5CR intake is what I used, high flow oil-less filter like K&N and a CNC machined MAP sensor unit type holder thing-a-ma-bob. Paid 169 for that.
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Old 08-11-2009, 09:38 PM   #30
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Originally Posted by suavecito1177 View Post
I just got off work guys, and the shop is closed, but I will head over there first thing tomorrow morning and get it for you. I need to get my old parts back anyways. The install was pretty cheap about a bill for the res. and another 200 for the labor and 60 for the tips. I think the cheapest axle-back out is around 400, but that still leaves you with 2.25" pipe from your h-pipe to the axle-back and that didn't sit well with me. More CFM more HP. Same with the intake. G5CR intake is what I used, high flow oil-less filter like K&N and a CNC machined MAP sensor unit type holder thing-a-ma-bob. Paid 169 for that.
"more CFM more HP"

well... that maybe not be 100% accurate.

I'm guessing there is more restriction upstream in the cats and possibly heads...
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Old 08-11-2009, 10:09 PM   #31
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Quote:
Originally Posted by suavecito1177 View Post
I just got off work guys, and the shop is closed, but I will head over there first thing tomorrow morning and get it for you. I need to get my old parts back anyways. The install was pretty cheap about a bill for the res. and another 200 for the labor and 60 for the tips. I think the cheapest axle-back out is around 400, but that still leaves you with 2.25" pipe from your h-pipe to the axle-back and that didn't sit well with me. More CFM more HP. Same with the intake. G5CR intake is what I used, high flow oil-less filter like K&N and a CNC machined MAP sensor unit type holder thing-a-ma-bob. Paid 169 for that.
From what I've been reading more CFM can mean less backpressure which can mean less low end torque and more higher end HP. Not an ideal trade off on this car.
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Old 08-11-2009, 10:29 PM   #32
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From what I've been reading more CFM can mean less backpressure which can mean less low end torque and more higher end HP. Not an ideal trade off on this car.
probably not going to be an issue if you keep the stock cats...
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Old 08-12-2009, 01:27 AM   #33
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Ill be dynoing it here soon and we can get some real numbers. I don't plan on changing the cats since no tuning is available on the ECM. Well, IMO going from 2.25 to 2.5 and back to 2.25 is kinda wacko, but then again it's chevy and from what ive seen and felt on this camaro it works.
I don't want to spend to much money swapping my exhaust for this one or that one. The Mag sounds and feels good so I may stick with it for awhile till I get the MBRP or boost. Then it's 3" all the way.

One thing I might do it remove the h-pipe and move the Mag close to the tranny to get my cross-brass back then add in some 40 series mags before the tips. But, thats after the 24" and 22" stagered, sport suspension and body kit.
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Old 08-13-2009, 04:48 PM   #34
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Been busy guys, but the part # on the Mganaflow is the 12568.
Here is the link
http://www.magnaflow.com/02product/s...e=main&id=8204

My pricing on the MBRP S7020 cat-back kit for the V6 is $895 plus shipping.
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