Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Intake/Exhaust (http://www.the370z.com/intake-exhaust/)
-   -   AAM Competition S-Line Short Tail Axle-Back Exhaust (http://www.the370z.com/intake-exhaust/28907-aam-competition-s-line-short-tail-axle-back-exhaust.html)

shawn84 12-27-2010 04:33 PM
yes. plz do somthing on the price.... plzzzzzzz.......

Dan Z Man 12-27-2010 07:16 PM
i'm not one to complain about prices usually, factoring Research and development and what not, but to be honest, considering it's stainless steel, and 2 little pipes, i truly believe the price should be lower.

i'm not saying they aren't amazing! just a little much for 2 little pipes :)

Footloose301 12-27-2010 07:23 PM
I think their R&D department would have posted the dyno results if they were positive......:icon14:

I'm leaning towards "pass" on this purchase until we get dyno results.

christian370z 12-27-2010 10:35 PM
Quote:
Originally Posted by Footloose301 (Post 868339)
I think their R&D department would have posted the dyno results if they were positive......:icon14:

I'm leaning towards "pass" on this purchase until we get dyno results.
I don't see how it can negatively impact power over the stock muffler. The level of restriction in the exhaust goes like this in my opinion (1 being the most):

1) Stock catalytic converters
2) Stock Y pipe
3) Stock muffler

I am sure these will provide decent gains since they are eliminating a pretty convoluted stock muffler design.

Kastley85891 12-27-2010 11:17 PM
Information purposes - AAM, if you want this deleted PM me.
Stock muffler internally..
http://i116.photobucket.com/albums/o...Z/IMG_6326.jpg

Dan Z Man 12-27-2010 11:21 PM
well that's quite..interesting looking lol

VQinside 12-28-2010 05:09 AM
I'm sure its those little holes inside the stock muffler that take away the signature sound the 350z used to have :shakes head:

GZ3 12-28-2010 09:54 AM
wow if you know anything about exhaust scavenging, you can see that this might be the most restrictive part of the 370Z's exhast....worst than the cats i would venture to say

Kastley85891 12-28-2010 10:02 AM
Its a world of suck......

AAM - let us know on mufflered versions..... ;-)

Nikkolai 12-28-2010 10:29 AM
Quote:
Originally Posted by Kastley85891 (Post 868813)
Its a world of suck......

AAM - let us know on mufflered versions..... ;-)
I am interested in dual straight through muffler designs as well. I know that AAM Competition and the Megan racing dual mufflers are the only axle back designs for the 370Z. There is also the HKS Legamax but it is real expensive for an axle back. I only wanted a bit more sound since the Nismo exhaust is already an "H" design for true dual exhaust but very quiet. I did do the washer mod but it was a bit too loud for me and the exhaust note is not what I was looking for.

Footloose301 12-28-2010 10:49 AM
Quote:
Originally Posted by christian370z (Post 868492)
I don't see how it can negatively impact power over the stock muffler. The level of restriction in the exhaust goes like this in my opinion (1 being the most):

1) Stock catalytic converters
2) Stock Y pipe
3) Stock muffler

I am sure these will provide decent gains since they are eliminating a pretty convoluted stock muffler design.
Seems to be that the straight thru design of AAM axle backs would be the same as just removing the stock muffler thus decreasing torque...? Perhaps I'm wrong and I am just pulling this out of my *** but idk. I realize te stock muffler is restrictive but axle-backs (IMHO) seem like they would take away too much back pressure....... It would be nice if a few people could describe how the butt dyno feels or an actual dyno.

Kastley85891 12-28-2010 11:42 AM
^Depends on your entire exhuast path - thats why I run a Y pipe ;-)

GZ3 12-28-2010 01:57 PM
man some dynos need to surface soon! sounds really good, cant stop replaying

christian370z 12-28-2010 04:59 PM
Quote:
Originally Posted by Footloose301 (Post 868852)
Seems to be that the straight thru design of AAM axle backs would be the same as just removing the stock muffler thus decreasing torque...? Perhaps I'm wrong and I am just pulling this out of my *** but idk. I realize te stock muffler is restrictive but axle-backs (IMHO) seem like they would take away too much back pressure....... It would be nice if a few people could describe how the butt dyno feels or an actual dyno.
You are right on that theory, I do believe that sticking to 2.5" exhausts on either bank is the best balance between flow and retaining some torque on these cars (at least N/A). If the pipe diameter was larger, for instance a 3" diameter, you would definitely feel a loss in torque.

But, the butt dyno knows all and that is ultimately what matters!

VQinside 12-30-2010 12:01 AM
potential client still waiting for decibels here :tiphat:

Vince's Red-Z 01-01-2011 10:56 PM
Wazzup,
Hey I have stupid question, are the S-Line Short Tail sold in pairs? And is the promotion code still valid? Thanks. P.s. and any performance improvments or it's just more a noise maker (which I like). Thanks.

GZ3 01-03-2011 08:16 PM
yes pairs

any updates or dynos?

Kastley85891 01-03-2011 08:33 PM
Show us Zee muffled options... ;-)

Vince's Red-Z 01-03-2011 08:53 PM
Quote:
Originally Posted by Kastley85891 (Post 868896)
^Depends on your entire exhuast path - thats why I run a Y pipe ;-)
Hey,
You only have a Y pipe with stock muffler? If yes, is the "Y" it an improvement? Or loss of low end torque? Thx.

Kastley85891 01-03-2011 09:21 PM
I run a Y with TP's, previously, just the Y pipe and it felt better in every way.

Vince's Red-Z 01-03-2011 09:55 PM
Quote:
Originally Posted by thezmonster (Post 856930)
it should be louder and Im running with stock cats and stillen G3 intakes
Yo, If you don't mind sharing what you still think of your AAM? Was there a loss in low end torque? Do you think these would be too loud (like a Harley starting at 3am - LOL)? Thx. P.S. Your car sounds wicked!

VQinside 01-04-2011 01:08 AM
Quote:
Originally Posted by Kastley85891 (Post 879116)
Show us Zee muffled options... ;-)
+1000
muffled versions would be great! something like 92 decibels! :tup:
the muffled versions would be great for that price.

Vince's Red-Z 01-04-2011 12:30 PM
Quote:
Originally Posted by Vince's Red-Z (Post 879298)
Yo, If you don't mind sharing what you still think of your AAM? Was there a loss in low end torque? Do you think these would be too loud (like a Harley starting at 3am - LOL)? Thx. P.S. Your car sounds wicked!
Got official answer to my own question:

>>Yes.* Horsepower is improved, but not dramatically.* The exhaust was designed to reduce weight, and improve the sound.* I can email you dyno graphs when I have them available.<<

GZ3 01-04-2011 01:13 PM
Quote:
Originally Posted by Vince's Red-Z (Post 880062)
Got official answer to my own question:

>>Yes.* Horsepower is improved, but not dramatically.* The exhaust was designed to reduce weight, and improve the sound.* I can email you dyno graphs when I have them available.<<
are you otherwise stock? i would like to see the dyno too please sir thank you

younter 01-04-2011 03:57 PM
Any one give me any suggestion of either get the AAM short tail.. or go to a muffler shop and do a custom one? Any suggestion? I just want to have the loud sound..to be honest.. I think this product is a bit high cost...

Kastley85891 01-04-2011 03:58 PM
Dyno +

Hey AAM, how about getting a mid pipe manafactured? 3 in to dual 2.5 in

younter 01-04-2011 04:00 PM
Yes..I would love to see some dyno..
if there is gain..definitely go for this~

Vince's Red-Z 01-04-2011 04:43 PM
Well.., the answer is from someone at AAM. I was asking them questions and they got back to me. I am stock just looking for a worthy noise maker.

younter 01-04-2011 06:54 PM
Well. I did receive a price quote.. But still. Havent heard anything from them...Many say if they going to do a tip option..

PL8MYRIDE.COM 01-04-2011 08:01 PM
Quote:
Originally Posted by Jon@AAMComp (Post 849170)

We got ya. We're considering a muffler option, similar to the Rocked Dancer Axle Back from Fujimura. I'll be sure to keep everyone posted.
Hi Jon,

Nice work with the exhaust, just wondering if the Fujimura style exhausts will be released soon.

Also, with the tips will there be options like a quad tips available.

Thanks.

Cheers,
KS

VQinside 01-04-2011 09:35 PM
can you gus explain to me what exactly "drone" is? :tiphat:

christian370z 01-04-2011 10:41 PM
Quote:
Originally Posted by VQinside (Post 880964)
can you gus explain to me what exactly "drone" is? :tiphat:
It is a point at which the exhaust sounds boomy and you can feel that specific pitch resonating through the cabin. It generally happens between 2,500-3,000 rpm with the 370zs, and is almost reminiscent to deep bass as if you had a subwoofer playing a constant low frequency.

Edit: just to add on, some drone will be gained with a louder exhaust as you simply have less baffling and material in the generally smaller and higher flow mufflers on aftermarket exhausts. That said, some people are more sensitive to drone than others so be aware of that when reading any opinions.

christian370z 01-04-2011 10:45 PM
So, can anyone confirm if there is any drone after adding the AAM short tail?

Csquared 01-05-2011 02:29 AM
I asked for a price quote like the second day they started this thread or something. I still haven't heard anything!!

ImportConvert 01-05-2011 03:45 AM
Quote:
Originally Posted by spearfish25 (Post 846726)
Ear-shattering. I can tell you that my custom muffler delete had immense drone and gave me a headache with 20 min of highway driving. The sound was awesome, but it's so loud you think your ears will bleed at about 4-5.5k rpm. With HFCs, it would be even louder.

Not trying to criticize the AAM axle-back delete, but buyers need to know what they're in for. I'd recommend this for the guys who drive their car on occasion and want to turn some heads. It would also be cool for the track, but you'd need ear plugs with your helmet. This setup would also be perfect for a roadster as you wouldn't have any of the drone...just the incredible sound. What you can't appreciate in any of the videos is the over-run burble. It's downright sexy.

That being said, I absolutely miss the sound this setup has. If there was a solenoid option to switch between muffled and muffler-bypass, I'd buy it without a second thought. I don't care if it would add 50lbs to the car, it would be friggin' awesome.

This is essentially what you're getting:
http://www.youtube.com/watch?v=VzbpIK7OdCQ
Nissan needs to get with GM on that, then, lol.

I ran a a pre-axle dump on my GT and it was rediculous. Would not do it again. That even had mufflers. Sounded great, but like you said, it hurt.

VQinside 01-05-2011 08:38 AM
Quote:
Originally Posted by christian370z (Post 881043)
It is a point at which the exhaust sounds boomy and you can feel that specific pitch resonating through the cabin. It generally happens between 2,500-3,000 rpm with the 370zs, and is almost reminiscent to deep bass as if you had a subwoofer playing a constant low frequency.

Edit: just to add on, some drone will be gained with a louder exhaust as you simply have less baffling and material in the generally smaller and higher flow mufflers on aftermarket exhausts. That said, some people are more sensitive to drone than others so be aware of that when reading any opinions.
sweet thanks for the explanation. sounds like its a bunch of vibrations inside the car. not fun.

Quote:
Originally Posted by Csquared (Post 881240)
I asked for a price quote like the second day they started this thread or something. I still haven't heard anything!!
I could be wrong but I don't think thy have someone monitoring this forum.
sucks cuz I would really like more info. they promised a decibel video

4r3s 01-05-2011 10:13 AM
In my experience with AAM the only reliable way to do buisness with them is to call them. When they say they'll call you back, don't wait for them to do so, call them again. The people there are great and they do good work, they just need to do better on reaching out to their customers more reliably.

AAM Competiton
(301) 497-9212

Oh yeah I will also add if you have an issue with something you purchased from them they will make it right, but you have to be proactive in getting and staying in touch with them.

christian370z 01-05-2011 12:24 PM
I just got off the phone with AAM and although nothing is concrete obviously, there would be the possibility of producing a muffled version if there is enough interest. I am waiting on a call back later from them but if you would be willing to purchase a muffled short tail exhaust, please chime in!

Nismoracer 01-05-2011 04:49 PM
What's the point of a muffled version? This guy showed a vid and was very honest about the drone. Our 370s sound great without a muffler but if it produces drone inside the cabin.......Forget it. Maybe they haven't gotten back with the info cuz they found out that it does create drone??? Don't see how doing the washer mod doesn't create drone and this shootin out the back end would.??? Very interested in getting a set of these. They sound great. Won't have to mod my stock set up at the shop I can keep this on the side and swap em out. Anyone put exhaust cut outs yet? That would do both, loud when you want it and stock when you don't. These short tails from aam are a bit pricey though. I can have it done at a shop for $280 straight pipe muffler delete and use my stock tips BUT I won't be able to swap back to stock on occasion. :confused: Bet the Short tails would sell more if they were $100 less. :tup:

younter 01-05-2011 04:50 PM
Im in for the muffled version...


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