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Old 02-15-2011, 02:51 AM   #101
GriffithBuilt
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Quote:
Originally Posted by cmiller219 View Post
ok so that answers the question of power. does it mess with your back pressure? and the midpipe was the section that i was referring to but it seems you already knew that and possibly have something in the works for that. I just found it unclear as to why you where going from one size to another back down. And as i stated in a previous post that the product looks very nice and well engineered and built. The welds are very nice i just couldn't convince myself to eliminate mufflers to a 3in pipe but still run the stock piping to it.
I'm going to try to answer this as clearly as possible and I'm working a little to understand what you're asking me here. Some of your questions are quite contradictory (doesn't it mess with backpressure? vs. 'still run stock piping to it.') First, it does decrease backpressure. On a turbocharged engine, that is beneficial, both in the spool characteristic - as backpressure is equivalent to drag on the turbine wheel and also at the top end while the car is in boost, which is where you're going to get the majority of your power. The factory rear mufflers, while large, are restrictive due to their multi chamber baffled design. The factory pipes going into the factory rear mufflers are 2". So are ours. This section of the exhaust does flow slightly higher than the 2.65" midpipe. The dual 2" exhaust pipes that we produce are the equivalent of a 2.83" single pipe. Not really sure where your knowledge comes from that indicates a .35 or .17" difference in diameter would make any difference. So if you think the axleback pipes are too small, it's the difference in the effective diameter of the size of a bb. Seriously. .17" Smaller than the diameter of a BB.

Now I'll tell you a little of my emperical knowledge. Eight dyno tests on eight different four cylinder vehicles, turbocharged and naturally aspirated. Each of these vehicles, in terms of catback gains, we found 90 percent of the gains came from the elimination of final muffler backpressure. 90%! And that is over a stock vehicle test.

Now lets talk about exhaust backpressure performance gains. Downpipes, catbacks, in some instances midpipes for vehicles with a two piece factory downpipe each of which have catalysts onboard. In 100% of the dyno runs I have done on exhaust designs across multiple platforms and engine configurations, exhaust gains on boosted vehicles are asymptotic. Meaning that as you pull restrictions out of the system, you reach a point of diminishing returns. If you do a stock vehicle baseline, then throw a downpipe on and do dyno pull tests, you'll see x amount of hp gain (for explanatory purposes we'll say 18hp). If you put the catback on after that, you might see
8hp out of the catback. But if you do the same test the other way around, you might see 13 out of the catback and 13 out of the downpipe. Because these deletions of restriction reach a point of diminishing returns, it is beneficial for any enthusiast to find the most restrictive points in their exhaust system and replace them with less restrictive performance alternatives. If I can sell you a downpipe and an axleback exhaust for a reasonable cost, fit it into a reasonably sized box and get you a good deal on shipping, and the last piece that I do not make is bulky and only makes 3hp gain after you've swapped the downpipe and mufflers out, then I'm doing you a favor. I'm selling you the best bang for the buck. I have a $1100 catback design on the wall at my shop that we tested for almost a MONTH thinking it was going to be our go-to design.

Afterward we decided to make a budget alternative which was this AxleBack. When it was finished we couldn't think of a single reason to sell the big catback when the simpler, cheaper and easier to install AxleBack achieved everything that the catback did. Explain what my ulterior motive would be in not selling a product that has a higher price point and thereby a higher overall profit margin?

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Originally Posted by xluben View Post
Any more word on the 2011 hatch? Haven't gotten any e-mails in a while
Yes! We have been gathering up parts to finish out our design and we're hoping to get that done by Friday of this week and start testing it on a local 2010 STi Hatch this weekend. We are evaluating three options for muffler and muffler delete configurations.

Quote:
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Uh btw is a muffler delete illegal in California?
No. Catback exhausts are not regulated by the California Air Resources Board. Most noise ordinances are local and you can call your local highway patrol office to ask them what the standard that you need to adhere to locally is in advance. There is usually a decibel rating that they will refer to, just make sure to ask them specifically what the local ordinance numbers are that refer to this. If need be, call your local court house or law library, these are public facilities that you can access as a citizen. The law librarian will be able to point you right to local statutes. Arm yourself with these standards and be polite, but be ready to defend your choice to modify your vehicle in a legal way.
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Last edited by GriffithBuilt; 02-15-2011 at 06:01 AM.
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Old 02-15-2011, 08:53 AM   #102
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Well put! These aren't V8 muscle cars that require back pressure to make power. Love the sound of my Nameless I just put on last week.
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Old 02-15-2011, 08:56 AM   #103
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It also gets rid of the cold start vibrations that can shake the walls of a house.
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Old 02-15-2011, 09:01 AM   #104
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Quote:
Originally Posted by JordanM9
It also gets rid of the cold start vibrations that can shake the walls of a house.
How does it stop the vibrations?
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Old 02-15-2011, 09:18 AM   #105
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I dont know the physics behind it, but it is noticeably less of a droning sound when just below the 2k range.
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Old 02-15-2011, 11:03 AM   #106
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Why pay $1000 plus for noise and very minimal "gains"? Those "gains" aren't worth a grand to me.

Dammit! I posted without seeing the rest of the other posts. I didnt see them.

Last edited by Vectors2Final; 02-15-2011 at 11:12 AM.
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Old 02-15-2011, 11:05 AM   #107
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American-made and affordable?
sign me up when one comes out for the GD.
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Old 02-15-2011, 11:15 AM   #108
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Quote:
Originally Posted by XanRules
American-made and affordable?
sign me up when one comes out for the GD.
It's affordable because all it is piping, other people keep telling me just to take off stock mufflers and goto a shop and get piping, but id rather support a american company who can possibly make a full cat back and downpipe etc
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Old 02-15-2011, 12:21 PM   #109
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I think that with a this and a mid pipe it would be sufficient. I would really like to get the tests done to see the differences maybe i might just have to.
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Old 02-15-2011, 02:21 PM   #110
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I think that with a this and a mid pipe it would be sufficient. I would really like to get the tests done to see the differences maybe i might just have to.
Excited to hear what you find out on the dyno, Chris. Your pipes will ship tomorrow!!

Jason
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Old 02-15-2011, 03:06 PM   #111
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Originally Posted by JordanM9 View Post
I dont know the physics behind it, but it is noticeably less of a droning sound when just below the 2k range.
Check out the comparison vid I posted in the previous page. It shows the stock mufflers give a "putt putt putt" sound while the nameless do not. Maybe that has something to do with the droning sound below 2k with the stock mufflers?
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Old 02-15-2011, 03:25 PM   #112
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Check out the comparison vid I posted in the previous page. It shows the stock mufflers give a "putt putt putt" sound while the nameless do not. Maybe that has something to do with the droning sound below 2k with the stock mufflers?
Well there is certainly an element of 'shake the house' on the factory mufflers that does not exist on our straight pipe design. Even our customer the day after he took them home noted that the plates didn't shake on the shelves when he fired the car up anymore. It's most likely something that has to do with the factory baffling design. See, the factory mufflers have chambers in them that act to store exhaust waves and bounce them back toward the source in order to cancel noise. Unfortunately these systems are static so you get different effects at different points in the powerband and with different exhaust flow rates.

That's the best I can do to explain why a factory baffled muffler has more resonance than a muffler delete that has about ~5dB higher amplitude at the same rpm.

J

Last edited by GriffithBuilt; 02-15-2011 at 03:34 PM.
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Old 02-15-2011, 04:29 PM   #113
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My stock mufflers would set off car alarms in parking garages when it started droning around 1.5K rpm
It was hilarious
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Old 02-15-2011, 06:01 PM   #114
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Mine stopped when I removed the resonator.
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Old 02-15-2011, 06:05 PM   #115
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Mine stopped when I removed the resonator.
How did you remove it? What did you replace it w/?
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Old 02-15-2011, 06:31 PM   #116
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Good Work Nameless - this thread reminds me of Buschur Racing when he got the 2006 WRX and started making his TBE for that car - The power I got from his products were awesome in my WRX and have been looking for another shop like them for the last year or so since I got another Subaru.

Nameless - when you get your vendor status and dyno figures I am sure this will help put yourself on the map. "if you post them they will come"

Let me know when you have a DP and the cost. I could be interested in doing this earlier than expected.

Thanks
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Old 02-15-2011, 07:45 PM   #117
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Quote:
Originally Posted by xabre1200

How did you remove it? What did you replace it w/?
I went to a local shop and had them cut it out and weld a new pipe in place. It sounded good when I took it off when I had the stock DP but not that I'm stage 2 it sounds like ass. My pipes come tomorrow!
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Old 02-15-2011, 08:29 PM   #118
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Originally Posted by Hughesj04 View Post
Good Work Nameless - this thread reminds me of Buschur Racing when he got the 2006 WRX and started making his TBE for that car - The power I got from his products were awesome in my WRX and have been looking for another shop like them for the last year or so since I got another Subaru.

Nameless - when you get your vendor status and dyno figures I am sure this will help put yourself on the map. "if you post them they will come"

Let me know when you have a DP and the cost. I could be interested in doing this earlier than expected.

Thanks
We're just now building the first hatch axleback unit and a similar unit that can be used with a 3" factory fit midpipe. Once those are done we will be test fitting them on a customer's 2010 STi Hatch (Saturday) and then also getting his factory downpipe from him at that time. Once the factory downpipe is fixtured we will start working on some designs and should be ready to share some of them in the next week or two.

Lots going on here and still trying to squeeze development work in between the production builds.

Jason
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Old 02-16-2011, 01:37 AM   #119
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Just got my Nameless Performance axleback today. I ordered it flush with the valance and it looks incredible. The install was pretty quick, took about 10 mins to get the stock mufflers off and another 10 to put the new ones on. However, I think I spend 1 hour+ trying to adjust my new mufflers. (I still don't think I got them even) They sound amazing!!! It's not exactly "loud" but it sounds soooo aggressive it's ridiculous. Videos on youtube certainly do this exhaust no justice. I've never heard a Perrin exhaust in real life but from watching so many youtube videos of it I gotta say the Nameless sounds very similar. I have a buddy with an Invidia and this exhaust sounds nothing like that. Taking off from a dead stop is when the exhaust is at it's loudest imo, cruising at 2k rpm and there is no drone at all. If you roll up the windows you can hardly tell it has an aftermarket exhaust on it. I didn't get a chance to test it out too much but I'll be sure to let you guys know how it sounds after a week or so. However as of right now I am super happy with it.
*btw if you guys want to know what it'll sound like just take your stock mufflers off, the nameless performance exhaust sounds like that except a tiny bit raspier and more defined. this is definitely not a quiet exhaust nor is it super loud*
Best $300 I've spent yet!

Quad Staggered Double Wall Round Tips, double wall polished flush w/ valence, 10 Degree Angle Cut staggered
Looks great! Mine arrives tomorrow. Are there any exhaust gaskets that you had to replace?
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Old 02-16-2011, 01:45 AM   #120
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Looks great! Mine arrives tomorrow. Are there any exhaust gaskets that you had to replace?
Sweet put up some pictures if you have a camera. Nope just use your stock gaskets.
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Old 02-16-2011, 02:23 AM   #121
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Hatch proto pics are on our FB Page: http://facebook.com/namelessperformance

Got the first proto finished, have a second to build tomorrow and then need to finalize the integrated cutout when we test fit on the car on Saturday.

j
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Old 02-16-2011, 03:29 PM   #122
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I guess, I dont understand the difference between the Straight Double Wall and Quad Round?

Do you have longer tips so you do see the welds in the back? like in the pic bellow where you see the welds

[IMG]http://a5.sphotos.ak.fbcdn.net/hphot..._1958450_n.jpg[/IMG]

I guess I want it to look like this in: Bare Finish, 10 degree slash, dual wall and flush with valance but longer tips. (non-staggered
http://namelessperformance.com/wp-co...al%20Round.jpg

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Old 02-16-2011, 04:02 PM   #123
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Dual wall is a flared tip, similar to the SPT exhaust or the OEM 2011 sedan exhaust.

Otherwise you just have a pipe that is cut off, like the COBB or Perrin (or many others).
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Old 02-16-2011, 04:27 PM   #124
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Straight double wall are slash cut 10 degrees and double wall. They fit flush.

The double round is a single wall rolled tip that looks best at halfway out.

If anyone has any questions you can always email me at jason.g@namelessperformance.com.

Thanks!

Jason
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Old 02-16-2011, 04:58 PM   #125
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Do you have a pic of the double round at halfway out? And one of the straight double wall flush? TIA.
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