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

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Old 09-01-2009, 11:48 AM   #1
Blueclyde

 
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Camaro SS Axle Back Exhaust from MRT Performance

Last week I had an axle back exhaust system installed on my 2SS/RS LS3 that was recently developed by a local performance shop called MRT Performance. The system replaces the stock mufflers with 2 Aero Exhaust 2 1/2" resonators. It was a very simple install with cuts right after the IRS and before the trunk well. They are just finishing their fixtures and are waiting on parts from Aero Exhaust. This project started with the development of member "SCRMING's" V6 system (See his thread in V6 forum). He hooked me up with these guys and they validated their design on the SS model using my car. MRT is a great company. Their owner Scott is very knowledgeable and experienced. I know they are going to price this system right and the quality is awesome. These guys are good at what they do. All fabrication takes place in-house. Totally 304 SS system, chrome 3 1/2" tips all welded with one band clamp joint.

I have some video clips below. I hope this works (first timer with posting videos). The sound of the car is night and day over the stock system. It's just right for me. I now can here my car when another "muscle" car pulls up next to me. It is also not obnoxiously loud. I think these videos tell the story. I love the system.





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Old 09-01-2009, 12:23 PM   #2
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Sounds good
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Old 09-01-2009, 12:24 PM   #3
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videos embedded:







Now if I only had speaker at work!!!!
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Old 09-01-2009, 01:05 PM   #4
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Dude, what was the cost?
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Old 09-01-2009, 02:15 PM   #5
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Yeah, price please! Do they offer 4" tips too?
It looks like there are no A6's with this setup yet. I really want to hear it on an A6, totally different sound with the mi-pipe resonator.
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Old 09-01-2009, 02:19 PM   #6
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Sounds great! Almost sounds like a mix of Corsa and Borla, and I was torn between which of those 2 to get, but this system sounds amazing. How much did this run you?
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Old 09-01-2009, 02:31 PM   #7
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I talked with Scott about the pricing on this system. The kit will be listing for $499... HOWEVER, he is going to have an introductory price of $439!

As for the 4 inch tips, Scott told me he is looking into that... he needs to find a tip that will meet his standards, and will need to setup a second fixture to build kits with 4 inch tips... Now this is just me thinking out loud.. but a larger tip would mean more material which in my mind means a bit more money... so I'm making the assuming that the pricing on a 4 inch tip kit would possibly higher priced... pure speculation on my part...

BTW... a bit more info on Scott Hoag and MRT i posted the other day:

http://www.camaro5.com/forums/showpo...&postcount=168
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Old 09-01-2009, 03:31 PM   #8
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Just got home and listened with the headphones... WOW! Sounds great! Looking forward to hearing your car in person!!!

one minor thing... tips are not chrome...




Custom MRT designed 3-1/2" diameter 304 Stainless Steel rolled tips.

also hope you don't mind... Here are a few more pics of the tips on my car...

Make sure to click on the picture to view full size!












The tip ends do have a slight slash cut to them...
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Old 09-01-2009, 04:28 PM   #9
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Quote:
Originally Posted by Blueclyde View Post
Last week I had an axle back exhaust system installed on my 2SS/RS LS3 that was recently developed by a local performance shop called MRT Performance. The system replaces the stock mufflers with 2 Aero Exhaust 2 1/2" resonators. It was a very simple install with cuts right after the IRS and before the trunk well. They are just finishing their fixtures and are waiting on parts from Aero Exhaust. This project started with the development of member "SCRMING's" V6 system (See his thread in V6 forum). He hooked me up with these guys and they validated their design on the SS model using my car. MRT is a great company. Their owner Scott is very knowledgeable and experienced. I know they are going to price this system right and the quality is awesome. These guys are good at what they do. All fabrication takes place in-house. Totally 304 SS system, chrome 3 1/2" tips all welded with one band clamp joint.

I have some video clips below. I hope this works (first timer with posting videos). The sound of the car is night and day over the stock system. It's just right for me. I now can here my car when another "muscle" car pulls up next to me. It is also not obnoxiously loud. I think these videos tell the story. I love the system.





How loud are they inside the car,I'm looking for some muscle sound,but not so much to drown out the radio/cd at highway speed.Thanks
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Old 09-01-2009, 04:31 PM   #10
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How loud are they inside the car,I'm looking for some muscle sound,but not so much to drown out the radio/cd at highway speed.Thanks
The interior sound is perfect. Really no drone unless you lug the engine. It's loud when you want it to be but still quiet when it needs to be.
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Old 09-01-2009, 04:38 PM   #11
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SCRMING Thank you for all of the extra pics and information. I do believe though that those tips are chromed 304SS. How else would they have such a shine to them?
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Old 09-01-2009, 04:53 PM   #12
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SCRMING Thank you for all of the extra pics and information. I do believe though that those tips are chromed 304SS. How else would they have such a shine to them?
oops!!! i guess I just assumed they were just polished... d'oah! color me embarrassed!
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Old 09-01-2009, 09:07 PM   #13
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can you get them without tips? ... for us with GFX
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Old 09-01-2009, 09:11 PM   #14
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can you get them without tips? ... for us with GFX
I will double check with Scott!
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Old 09-01-2009, 11:51 PM   #15
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Interior videos in the works?
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Old 09-02-2009, 09:24 AM   #16
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Interior videos in the works?

Sorry I do not have any in cabin video or sound files. No plans to do it at the moment. I can tell you the cabin sound is very good. It rumbles when you need it to but cleans up and can be quiet as well. I have listened to all of the different system(s) sound files on this site and I really think this system is a mix between the Corsa and the Borla. Not quit as thin as the Corsa but not as deep as the Borla. For the money, this is a no-brainer. I also see no real value is doing a cat back vs. axle back.

When the car was on the hoist during the install we noticed that the front exhaust pipe (pre-cat), immediately coming off the manifold, is actually 2 1/4". It is necked down to connect to the manifold. So flow dynamics 101 says your flow is limited to your greatest restriction. Well that 2 1/4" section of pipe pretty much says the 2 1/2" pipes in the rest of the system are a waste of money. Save for the marketing value of GM being able to say it is a 2 1/2" exhaust it provides no performance value. Thought I would throw that in. Save your money and go with an axle back. Save more money and go with this MRT system. Or if you really want to do it properly go with headers, high-flow cats and a 3" system, if warranty and violating federal emission laws are of no consequence to you.
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Old 09-02-2009, 09:58 AM   #17
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Interior videos in the works?
I have reconsidered, thanks to a nudge from SCRMING. I will post some cabin videos later this evening or first thing tomorrow. This is a great system and everybody on this thread deserves to hear it.
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Old 09-02-2009, 10:19 AM   #18
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can you get them without tips? ... for us with GFX
Got a note back from Scott... he said yes, they should be able to build systems without tips...
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Old 09-02-2009, 12:37 PM   #19
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Sorry I do not have any in cabin video or sound files. No plans to do it at the moment. I can tell you the cabin sound is very good. It rumbles when you need it to but cleans up and can be quiet as well. I have listened to all of the different system(s) sound files on this site and I really think this system is a mix between the Corsa and the Borla. Not quit as thin as the Corsa but not as deep as the Borla. For the money, this is a no-brainer. I also see no real value is doing a cat back vs. axle back.

When the car was on the hoist during the install we noticed that the front exhaust pipe (pre-cat), immediately coming off the manifold, is actually 2 1/4". It is necked down to connect to the manifold. So flow dynamics 101 says your flow is limited to your greatest restriction. Well that 2 1/4" section of pipe pretty much says the 2 1/2" pipes in the rest of the system are a waste of money. Save for the marketing value of GM being able to say it is a 2 1/2" exhaust it provides no performance value. Thought I would throw that in. Save your money and go with an axle back. Save more money and go with this MRT system. Or if you really want to do it properly go with headers, high-flow cats and a 3" system, if warranty and violating federal emission laws are of no consequence to you.
Sorry for the ignorance,but what is the difference between cat-back and axle-back systems advantages-disadvantages
Back in my day all I needed to know was, is if you wanted lakers or just cut-offs/outs.
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Old 09-02-2009, 02:33 PM   #20
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Sorry for the ignorance,but what is the difference between cat-back and axle-back systems advantages-disadvantages
Back in my day all I needed to know was, is if you wanted lakers or just cut-offs/outs.
A cat-back system is an exhaust system from the "back" of the catalytic converters through the back of the car, which would includes replacing the pipes, existing resonators and mufflers on the 2010 Camaro SS. An axle back system is an exhaust system from just behind the IRS (independent rear suspension) module through the back of the car, which includes replacing a little bit of pipe and the mufflers.
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Old 09-02-2009, 05:31 PM   #21
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Got a note back from Scott... he said yes, they should be able to build systems without tips...

It would be great if he could make it for GFX, this axle back will sound so mean with my ARH setup.
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Old 09-02-2009, 09:42 PM   #22
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BlueClyde.
Alfie here, aka: Mariano. My brother and I spoke to you this evening at the cruise on 22 Mile Rd and Shoenherr. I am the guy that just ordered a VR 2SS yesterday. I think I'll join scrming and add a nudge or two and get you to add an in-cabin video to this thread.

Your exhaust system sounds good. Now that I have heard your system, it is the interior sound levels that I am most concerned with.

Nice to have met you and I hope to see you in the near future.
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Old 09-02-2009, 09:58 PM   #23
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Here are some interior cabin sounds. Sorry for the shaky camera work. Just close your eyes and enjoy the sound. I'm not near as good at this as SCRMING is.

BTW SCRMING I figured out the embedded thing.

Alfie - Great to speak with you tonight. Great turn-out at that show. Too many Mustangs though. We need to change that...




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Old 09-02-2009, 10:06 PM   #24
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Thanks!

So..... eyes closed... headphones on... car sounds GREAT! Looking forward to hearing it in person, hopefully some day soon!
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Old 09-02-2009, 10:30 PM   #25
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Alfie - Great to speak with you tonight. Great turn-out at that show. Too many Mustangs though. We need to change that...

Thanks for the video. It is exactly as you described...sounds great.

I am working on the "too many Mustangs" thing, but I can't add my SS to the count for another couple of months.

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