Roush axle backs are too quiet?

[Coyote15]

Hi all,

I recently installed Roush axle backs and like the way they sound, but wish the volume was higher! I bought the car with muffler deletes and it sounded great and the volume was perfect but they droned so bad. The Roush system has 0 drone but I want them as loud as my deletes.

I was wondering if anyone else felt the same. Should I go X or H pipe? I don't want it to be center of attention loud but I would like to be able to hear it from the cabin.

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[BmacIL]

https://www.google.com/search?hl=en......1.0..0.0.0.......0...........8.SYCNuMaRKM0

In all seriousness, they are known to be one of the two loudest axlebacks that aren't muffler deletes. I can almost guarantee you that you're already attracting a lot of attention. With an X-pipe or H pipe you'll be heard from very far away.

 

[nastang87xx]

H pipe will technically produce more dB energy but it won't be much. Also remember the laws of decibels, intensity, and volume perception.

 

[AmericanV8Guy]

Roush axle backs ARE loud (had them on my '14). Not much will be as loud as straight pipes, but thats generally a good thing, as those tend to be obnoxiously loud for the sake of being loud, while IMO sounding like crap under throttle. That said, the OEM catbacks on the 15-17s are ridiculously restrictive with the stock resonators. So if you want it louder, go with an aftermarket x or h pipe, or just have a shop remove the stock resonators.

 

[Zinc03svt]

Billie wants da bad ass sound wit out da drone. Get ya some electric cut outs player.

 

[BmacIL]

Billie wants da bad ass sound wit out da drone. Get ya some electric cut outs player.

That's called a Corsa Xtreme catback.

 

[hossman]

I have Roush Axle Backs with H-Pipe on my 17 Roush and its awesome and it will give you what your looking for.

 

[Coyote15]

I have Roush Axle Backs with H-Pipe on my 17 Roush and its awesome and it will give you what your looking for.

Thanks for the info man. Do you experience any drone on the highway? The sound clips on YouTube are always distorted.

 

[bootlegger]

Hi all,

I recently installed Roush axle backs and like the way they sound, but wish the volume was higher! I bought the car with muffler deletes and it sounded great and the volume was perfect but they droned so bad. The Roush system has 0 drone but I want them as loud as my deletes.

I was wondering if anyone else felt the same. Should I go X or H pipe? I don't want it to be center of attention loud but I would like to be able to hear it from the cabin.

I went Roush AB and x-pipe, and the rasp was too much. I ended up having 2 vibrant straight through resonators welded in to eliminate the drone. Careful when deleting the resonator. You should also consider whether you will be adding headers in the future. That really adds some volume.

 

[10th Anniversary Cobra]

The 2016 I just bought has the Roush axle backs, and it is too loud for my taste. Great sound, but I'm sure it's going to get unwanted attention.

 

[CompOrangeFanatic]

I have the Roush axle backs and by themselves, the tone sounded aggressive, but not obnoxious. I removed the stock resonator and added the Mishimoto h-pipe and the sound is obnoxiously loud now!LOL It sounds great, but I wish I could tone it down at times. It draws soo much attention and definitely is a Cop magnet. You can definitely hear this exhaust set-up inside of the cabin. I would consider it pretty loud inside of the car, but I wouldn't necessarily say that I would call it drone though. I'd like to do some sort of active exhaust in the future.

 

[iSpeed27]

The cheapest solution to this is to just lower the back seats. I have Roush mufflers with an MRT H-pipe which sounds absolutely amazing, and I also keep my back seats down all the time when I don't have to squeeze someone back there. The difference in sound with the seats up versus down is significant, and the set up is loud enough that it drowns out any road or tire noise coming through the trunk.

 

[nastang87xx]

Gee golly, Mr. Wizard, I don't know anything about that.

I'm not sure what you're getting at.

 

[Elvis66]

I went with the roush axle backs and the Corsa double x pipe. sounds perfect

 

[nastang87xx]

I thought you were offering a scientific lesson on the physics of sound as it relates to human perception.

dB's is a logarithmic function. So a dB level from 60 to 70 is not the same as 100 to 110. Considering the context, 10 dB change at 100 dB baseline is considerably more energetic than the prior. As dB level climbs, intensity gets exponentially greater. So if someone was saying "I measured 95 dB at 50 feet and I want 10 dB more" I would say "Are you VERY sure about that...?"

A GT350R or a GT350 with a resonator delete can routinely hit 100 dB at 50 feet depending on barometric pressure and wind. At that distance, 100 dB is very loud for a street car with cats still on.

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