Questions about Nameless Front pipe with Helmholtz Resonator
 

for those of you who do have it, do you guys think its worth it? I want the performance gains but near stock level sounds. So i will get a high flow cat, is the resonator needed?

Yes, Worth it. I've heard both setups, and own with helmholtz. Get it especially sicne you are looking to keep it as similar to stock sound as possible. (That was my same goal)

I'm still in question about the Helmholtz as well. I ordered the centered version of the Axleback but I'm not sure if it is coming that way or offset. I do plan on getting a header so that alone might be worth getting the helmholtz for.

Actually, scratch that. If I go the UEL route, I probably won't get one because racecar.

I just installed mine with Helmholtz... I also got it with because i plan to do the header as well. I also just ordered the new 3" inlet dual 5"X8" axle back. Honestly, with the stock axleback the only time it is even noticeably louder than stock is on cold start. After the idle kicks down you can't even tell it's there.

How does the catless front pipe with the helmholtz sound? Significantly louder than catted helmholtz?

I would say yes but with rasp as 90% of exhaust systems that go catless are raspy. Even with the stock header cat still there, you can get rasp with it. It's not worth going cheaper for the horrible sound.

It's not raspy at all, I have the catless over/front pipe with the HH resonator and the offset axle back and it is actually way quieter than I had hoped it would be. I plan on getting their header(most likely catted) as well so I got the HH res. Definitely louder when cold, but mellows out real quick as it warms up, and it's almost inaudible at cruising speeds, absolutely no drone in my car. And not raspy.

I was under the impression, correct me if I'm wrong, that the resonator was only targeted at the frequencies produced by the header and should have no effect on the sound of the rest of the exhaust.

can you compare the sound, tonal qualities loudness, high pitch content and rumble content of this with vs without vs say perrin resonated vs unresonated?

(yup, I'm considering a nameless for our 2nd BRZ)
you know, I want dirty nitty gritty details sportguy!

Your setup has enough muffle to reduce the rasp with the resonator and off-set design. You'll have to be careful if you go with a catless header though. Jason said it gets really loud with theirs and even in the catted downpipe video, there was some rasp in the 2.5" setup. Not sure if it was the redesigned 2.5" system though.

I don't have empirical data on exactly how loud it is.


A) MY BRZ with Helmholtz and Ofsset mufflers has a deeper tone, and is quieter than


B) @DGMBRZ's W/O Helmholtz and Non-Offset mufflers has a higher pitch tone, and sounds more aggressive.


Both tones are similar, but B) commands more attention, sounds more like a race car. A) is more mellow.

Is "A" wife/business client friendly as a passenger, can it be compared to stock, and can it be said "its quiet" below 4000 rpms? I need to get inside a Nameless equipped car,and under one to see this thing with the helmholtz

me likey! Thanks for your feedback!

My exhaust setup would be wife/business client friendly according to my wife, and that is 2.5" offset (original version) and a catless over/front pipe with HH resonator. Below 4000rpms cruising you can barely even hear it.

I'd say its acceptable. Not quiet like stock, but quiet enough to be pleasant. I will show you a pic of the Helmholtz give a moment.

Edit: That growing tumor/appendix is the Helmholtz.

http://www.ft86club.com/forums/attac...7&d=1346854851

I forgot to mention, I believe the new revision exhaust also uses 8" mufflers instead of 6" like mine has, so that will also help with sound level.

I don't see why you wouldn't get the resonator. It's just a smart option if you're concerned about sound at all. High flow cats further reduce noise levels, but they aren't mufflers or resonators. Get the cat for environmental something, then replace the exhaust manifold with a catless unit.

is that the the front pipe with the overpipe delete?
Im thinking about getting this, but im waiting on Jason to ensure fitment with stock headers and nameless headers in the future

Yes, that's the piece that converts the OP/DP into one single piece. I dont' see why wouldn't it fit future Nameless headers. Nameless headers are being develop to mate to stock location just like this piece.

I talked to Jason right before I ordered mine and he said they'll fit with both. Or else I wouldn't have bought it either.

They've always espoused using the stock pickups/mating points.

Doubt that resonator would fit with an auto trans though right?

I'm pretty sure it wouldn't.


As a side note, anyone going turbo does not need the helmholtz at all, the turbo takes care of everything.

Must call Jason...

agreed-
I'm running the original 2.5" axleback with 4"x6" mufflers non-offset, catted downpipe with Helmholtz, and 2nd gen nameless catless header, and it's raspy. The Helmholtz does help a lot, but the header in general adds a LOT of volume.

(note this is not the long tube header, but an equal length 4-2-1)

I have 2 videos in my build thread (link in signature) if you'd like to listen/watch.

Is anyone worried that over long period of usage the Helmholtz resonator might crack at the welding/connecting points with the main pipe due to the nature of the geometry?

Not unless you hit it on something.

even then... I doubt it. The Nameless welds are very good. They have pics of an exhaust they made that was in a really bad rear end accident, and the exhaust was perfectly fine afterwards, but the frame mounts were torn off. Ask Jason to show you the pics some time... incredible showcase of how good their workmanship is.

I bet. They've got some really high quality material they build with. I still can't wait to get mine because it looks really good.

The can of the helmhotz is welded to the body of the of the high flow cat on mine so that should further reduce stress on the connection to the main pipe.

Here's a picture of mine, high quality stuff IMHO

http://img.photobucket.com/albums/v3...ps33a9ab04.jpg

So does the catted pipe + helmholtz work better than the stock pipe in regards to:

a. drone and
b. loudness

There is a bit of 3-4k rpm drone I want to clear up with my cat back and am thinking this resonated nameless pipe might do the trick?

The helmholtz might tone down the drone a bit, but loudness, not really if your catback is already loud. The downpipe makes it a bit louder with the cat.

Just to weigh in, I bought one of the first axelback/overpipe kits (same as Tainen, just no helmholtz or header (yet!)) last year, and mine barely drones at all at cruise. That's the original design, high flow cat in the overpipe, and no helmholtz.

Then again, I'm used to straight-pipe peripheral port rotaries, so nothing seems loud anymore...

noob question, but does anyone know if this will fit my auto trans frs with my berk dual exit muffler delete?

I believe their latest design is auto friendly now. Call them up to be double sure.

I ran the nameless axle back for about a month while waiting on my front pipe. I got a newer offset axle back and it was supposed to be pretty quiet. I thought it was too loud. After installing the front pipe with the helmholtz chamber...I was very surprised how quiet it made the entire system. It's back to being nearly stock levels at cruise and sounds even meaner at wot. I got one of the newest revisions with the helmholtz located at the back of the pipe.

Nameless has a great rep for a reason. This front pipe is amazing. It's completely win-win. More power, high flow cat, less drone, more aggression, no rasp and impeccable craftsmanship. Now if they would only release their header.... :bonk:

Living in PA, so I have emissions. Driving an Automatic FR-S.
Price isn't really a matter. Which of this would be the best choice of the 4?
Basically what is the Meaning of SS/TI?

http://ft86speedfactory.com/search/r...x=-1136&y=-163

Looking to pull the trigger on this overpipe/frontpipe combo with helmholtz today. I've done as much research as I could on this and so far it looks absolutely amazing, was wondering if I could get some opinions/reviews from current owners of this part just out of curiosity.

Yes it's worth it!

Helmholtz Resonator on Automatic Transmission equipped FRS
http://i212.photobucket.com/albums/c...psfbceedac.jpg

Saw this bumped so I thought I might chime in with some updated info. I have added a JDL UEL header and the car is crazy loud now. Strangely enough, it doesn't drone at all. Thank you Nameless.