Everybody should go out and buy the Dynomax VT Axleback. - Ford Mustang Forum
 
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post #1 of 10 (permalink) Old 06-02-2014 Thread Starter
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Everybody should go out and buy the Dynomax VT Axleback....

I've had their VT Axleback installed for a few weeks now and couldn't possibly be happier with them.

Unfortunately at this time I don't have any sound clips but I'll grab some and put them in this thread ASAP.

Before I bought them I couldn't really find much info on them or many videos of them installed onto a 2011+ V6 Mustang so it was a bit of a risk dropping a few hundred on an axleback that I didn't know much about. What I did know was that it was advertised as DRONE FREE. That sold me right there. Properly designed exhausts are NOT supposed to drone. Drone is annoying and the last thing I wanted was an annoying car. People preach that "they want to hear their performance exhausts", and I completely agree, but a deafening drone at cruising RPM is not "hearing your exhaust", it's hearing a poorly tuned exhaust system. I previously had installed an MRT Axle back system and even that had too much background noise when cruising on the highway. I uninstalled them within a weeks time.

These Dynomax axlebacks are PERFECT for those that want a GREAT sound while accelerating and high RPM, but want a quiet, stock noise level when cruising along on the highway. I will repeat YOU CANNOT HEAR THIS EXHAUST WHILE CRUISING.

Ever hear the saying "Too much of something is never a good thing"? The same can be said for loud exhausts. Sure they sound great all the time, but there will be those times when you want to just cruise on the highway without droning your ear drums apart, or when you just want to talk on the phone without yelling, or when you want to have a normal conversation with your girlfriend while travelling 70mph.

But boy, when accelerating with moderate to heavy throttle, these axlebacks sound excellent, on par with any of the most popular systems available.

These mufflers have a valve inside them that opens and closes depending on throttle input. So if you're cruising at light throttle the valve is closed making everything nice and quiet, but when you push the gas and the valve opens, it lets the muffler become unrestricted and free flowing which means it sounds phenomenal. I have heard stories of the valves rattling at idle, or as the muffler ages and while there is no rattle what so ever right now, I'll definitely keep my ear open for it in the future and will contact Dynomax if the issue develops.

I can praise these mufflers for hours so if anybody has any specific questions, feel free to ask. In a few days I'll have some sound clips up so you can hear what they sound like.

Cheers!


2011 Mustang 3.7L, Sterling Gray, 6-speed manual, Interior Upgrade Pkg, HID's, Charcoal leather.

Last edited by TorontoGuy; 06-04-2014 at 01:55 PM.
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post #2 of 10 (permalink) Old 06-03-2014
KILLER
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where did you get them?

post #3 of 10 (permalink) Old 06-03-2014
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and what about Allied...in our family they have been on just about everything we own for 40+ years.

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post #4 of 10 (permalink) Old 06-03-2014 Thread Starter
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Quote:
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where did you get them?
I bought mine from Summit: http://www.summitracing.com/int/part...8507/overview/

They show you total shipping cost so there's no surprises at the door. Very fast shipping too. I ordered on a Monday and was installing on Wednesday.

2011 Mustang 3.7L, Sterling Gray, 6-speed manual, Interior Upgrade Pkg, HID's, Charcoal leather.
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post #5 of 10 (permalink) Old 06-03-2014
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How bad is the rattle can rasp with this exhaust, if any? Really want a new exhaust but with the least rattle possible.
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post #6 of 10 (permalink) Old 06-04-2014 Thread Starter
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I will get you some videos tomorrow on my way into work. I don't think this system is what you'd call "raspy", I'd say it's more throaty than raspy, but I'll let you decide for yourself.

2011 Mustang 3.7L, Sterling Gray, 6-speed manual, Interior Upgrade Pkg, HID's, Charcoal leather.
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post #7 of 10 (permalink) Old 06-04-2014
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The problem is that the valve wears out quickly at least thats what I've saw on nearly every application using this muffler so far. When the valve goes bad, say hello to horrible noise.

2013 V6 Premuim Pony Package, Comfort Package, Optional 3.31 Rear, Manual Transmission, Air Raid Intake
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post #8 of 10 (permalink) Old 06-04-2014
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Are aftermarket exhausts known for making excessive noise on the highway? I installed a set of Borla S-types a few weeks back and don't have any issues with "louder than stock" noise on the highway (or under ~2.3k rpm in any gear).

But then again, price may vary drastically which may have the Dynomax provide more value for your buck.
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post #9 of 10 (permalink) Old 06-04-2014 Thread Starter
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Quote:
Originally Posted by Rodimus_Prime View Post
The problem is that the valve wears out quickly at least thats what I've saw on nearly every application using this muffler so far. When the valve goes bad, say hello to horrible noise.
It's definitely a concern of mine, and luckily Dynomax has a decent warranty on the mufflers should something come up. I'd contact them the second I heard a rattle from the valve.

Quote:
Originally Posted by PDC View Post
Are aftermarket exhausts known for making excessive noise on the highway? I installed a set of Borla S-types a few weeks back and don't have any issues with "louder than stock" noise on the highway (or under ~2.3k rpm in any gear).

But then again, price may vary drastically which may have the Dynomax provide more value for your buck.
It's not only the noise level on the highway I was concerned about. The MRT axleback I had droned very uncomfortably under normal acceleration around 2800-3000rpm. This Dynomax kit has no drone at any point, ever.

2011 Mustang 3.7L, Sterling Gray, 6-speed manual, Interior Upgrade Pkg, HID's, Charcoal leather.
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post #10 of 10 (permalink) Old 06-04-2014 Thread Starter
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Here's a couple short clips of the exhaust. Revving up to about 4k, and moderate acceleration from inside the car with the windows down. This is just to give you an idea of what it sounds like, it definitely sounds deeper and slightly louder in person.

https://www.youtube.com/watch?v=n2gaDp0ONxo

2011 Mustang 3.7L, Sterling Gray, 6-speed manual, Interior Upgrade Pkg, HID's, Charcoal leather.
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