Nameless Performance BRZ Axleback Exhaust

[Swift]

I could be wrong about this but I believe anything over 98 decibels can cause damage to the ear drums. Most race cars are restricted at the track to like 96 I thought

[dabocx]

Originally Posted by Swift

I could be wrong about this but I believe anything over 98 decibels can cause damage to the ear drums. Most race cars are restricted at the track to like 96 I thought

Depends on the way the track measures, how far from the car exc exc

[Tainen]

Yeah. This was 90db in the cabin. Most tracks measure 30 ft away. Very different.

edit: he used a real dB meter, had to edit for accuracy. thanks UncleFester!

[NOBROWS]

mine will be here friday i cant wait!

[UncleFester]

Originally Posted by Swift

I could be wrong about this but I believe anything over 98 decibels can cause damage to the ear drums. Most race cars are restricted at the track to like 96 I thought

You're right.

My ears would hurt (literally) after a 30min commute with an average speed of 70mph.

Originally Posted by Tainen

Yeah. This was 90db in the cabin, with a cell phone app meter. Most tracks measure 30 ft away. Very different.

My measurements were taken with an Extech digital meter, not a cell phone app. Although I do have an Android app made my Smart Tools that also showed readings within this range.


There is still a possibility that something is wrong with the product I received. That has not been ruled out. I'm simply posting my experience with this product.

It may not be a coincidence that the big name manufacturers are incorporating the midpipe and using a straight through design.

[TrickyFrenchman]

So, are we saying the axle back is much louder than the videos implied even after re-installing the spare, etc.? I am really interested in this system and was close to making the call, but if I can't hear the person sitting in the seat beside me in normal conversation, I don't know that it's for me. Would like to hear from Nameless on the issue, or others who have installed it.

[fsevofq400]

Originally Posted by UncleFester

I think you're right.

My ears would hurt (literally) after a 30min commute with an average speed of 70mph.



My measurements were taken with an Extech digital meter that has an accuracy range of 40 to 130 dB, not a cell phone app.

I think that's a much better measurement compare to others.
same location same condition. Too bad you didn't take a measurement before the install, be very interested how it compares to stock

I really can't imagine the exhaust sound making ears hurt, and I've driven some loud ones too.
Maybe it's a matter to be raised to Nameless? I mean after all it's not labeled as a "RACE" exhaust

Tainen, did you feel the same way?

[SemperFi]

I heard the axel back in person over the weekend, and it was quiet to me. Although I came from an 04 and 08 R32 which sound like beast at times. This sounded like a tame mellow sound.

[Tainen]

Originally Posted by fsevofq400

I think that's a much better measurement compare to others.
same location same condition. Too bad you didn't take a measurement before the install, be very interested how it compares to stock

I really can't imagine the exhaust sound making ears hurt, and I've driven some loud ones too.
Maybe it's a matter to be raised to Nameless? I mean after all it's not labeled as a "RACE" exhaust

Tainen, did you feel the same way?

No, I did not. I've got some ear damage from being a drummer for 16+ years, and loudness bothers me a LOT.

Originally Posted by TrickyFrenchman

So, are we saying the axle back is much louder than the videos implied even after re-installing the spare, etc.? I am really interested in this system and was close to making the call, but if I can't hear the person sitting in the seat beside me in normal conversation, I don't know that it's for me. Would like to hear from Nameless on the issue, or others who have installed it.

[ame="http://www.youtube.com/watch?v=X_GhVCzVcdE"]Nameless Performance AxleBack Exhaust - YouTube[/ame]

As you can see here, this video is with the axleback and downpipe together. WingsofWar and I can have conversations while I am at WOT... and th video can even pick up the conversation, no problem. The axleback by itself is quietter than this setup, as well.

I appreciate the lower volume of this axleback, because when you start to do the more aggressive mods like downpipe and headers, it doesn't get insanely loud. With the downpipe, it does sound more aggressive, as you see in the video. With the headers, it gets louder. A little above my threshold for loudness, to be honest- but my threshold is pretty low, due to my hearing damage/concern.

The biggest single variable in exhaust loudness is the axleback. So when you start adding other parts and it increases in volume, having a good, muffled axleback is the most important part for loudness.

Hope that answers folks questions. If this unit isn't loud enough for you, I'd suggest the race pipe. I know nameless is running their full headers, downpipe, and everything with the race pipe, and they love it. It's crazy loud, but some people like that. Hence all the blitz nurspec's sold in the WRX/STI world. crazy mofos

[UncleFester]

Originally Posted by TrickyFrenchman

So, are we saying the axle back is much louder than the videos implied even after re-installing the spare, etc.? I am really interested in this system and was close to making the call, but if I can't hear the person sitting in the seat beside me in normal conversation, I don't know that it's for me. Would like to hear from Nameless on the issue, or others who have installed it.

The volume in the cabin is acceptable with everything in the trunk like it came from the factory.

Assuming the test car still had everything in the trunk, l think the posted videos are accurate and the exhaust is as advertised.

The exhaust is nice, deep, and mellow on the outside of the car. It would pass a track test any day. It's just the interior noise, especially between 2-3k rpm, but I only notice it with an empty trunk. Besides, most people probably don't cruise around with everything removed from the trunk. The only reason I do is because I race nearly every weekend in either my STI or my FRS, and it's just easier for me

Perhaps this Friday I will reinstall the stock exhaust and meter it both ways. That way we have the full spectrum. I'm sure it's a lack of sound deadening above and around the location of the mufflers.

[Tainen]

Originally Posted by UncleFester

The volume in the cabin is acceptable with everything in the trunk like it came from the factory.

Assuming the test car still had everything in the trunk, l think the posted videos are accurate and the exhaust is as advertised.

Yes sir, test car had all the junk in the trunk.


Thank you so very much for posting dB testing figures! You rock @UncleFester. Super helpful to other forum members. Gosh, if only I could get my hands on a dB meter for the full catless header/overpipe/catted downpipe/axleback... that'd be really great comparison numbers. It's definitely a good bit louder.

Originally Posted by UncleFester

You're right.

There is still a possibility that something is wrong with the product I received. That has not been ruled out. I'm simply posting my experience with this product.

It may not be a coincidence that the big name manufacturers are incorporating the midpipe and using a straight through design.

What do you think would be wrong with the product? It looks good, less welds than mine has, and it's not loud. Just curious.

[UncleFester]

Originally Posted by Tainen

What do you think would be wrong with the product? It looks good, less welds than mine has, and it's not loud. Just curious.

That is a disclaimer. Nameless may have a different opinion on these results. I don't think anything is wrong with it, but since I can't really see inside it I thought it would be prudent to say. I try not to assume anything.

[Tainen]

Originally Posted by UncleFester

That is a disclaimer. Nameless may have a different opinion on these results. I don't think anything is wrong with it, but since I can't really see inside it I thought it would be prudent to say. I try not to assume anything.

ah. ok. I'd imagine since they hand build every single muffler, issues with the muffler packing or welding would be easy for them to spot. If the welds look good without any cracks, I bet you're solid.

Hey when you do your dB measurements, do you also notice a drop off in volume after 4500rpm? I've got that taper, if you do as well, I'm betting the systems are performing fairly similarly. If you have a leak or a muffler with less packing, it'd probably just get a ton louder.

[Mild2Wild]

Can anyone who has just the axleback compare it to any other modified cars that are more prevalent? I'm itching to buy but the loudness concerns me. For example, for those of you who know Hondas would this be closer to k20 skunk2 exhaust or a mugen twinloop? Droning on the highway between 60-75mph is obnoxious and seeing as I'm a classical musician, damaging my hearing (as I think skunk2 did) is not an option...