AAM Competition S-Line Short Tail Axle-Back Exhaust

Footloose301 · 12-28-2010, 10:49 AM

Quote:

Originally Posted by christian370z

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 · 12-27-2010, 11:17 PM

Information purposes - AAM, if you want this deleted PM me.
Stock muffler internally..

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

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

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.

Kastley85891 · 12-28-2010, 11:42 AM

^Depends on your entire exhuast path - thats why I run a Y pipe ;-)

Vince's Red-Z · 01-03-2011, 08:53 PM

Quote:

Originally Posted by Kastley85891

^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.

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

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

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... ;-)

12-27-2010, 11:17 PM	#2 (permalink)
Kastley85891 A True Z Fanatic Join Date: Nov 2009 Location: ATX 370 - Sold Posts: 1,149 Drives: 2003 Wagon Rep Power: 19	Information purposes - AAM, if you want this deleted PM me. Stock muffler internally.. __________________ Boosted V8 hunter 2850 lbs and 375WHP

12-28-2010, 09:54 AM	#5 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 23	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 __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

12-28-2010, 10:02 AM	#6 (permalink)
Kastley85891 A True Z Fanatic Join Date: Nov 2009 Location: ATX 370 - Sold Posts: 1,149 Drives: 2003 Wagon Rep Power: 19	Its a world of suck...... AAM - let us know on mufflered versions..... ;-) __________________ Boosted V8 hunter 2850 lbs and 375WHP Last edited by Kastley85891; 12-28-2010 at 10:10 AM.

12-28-2010, 11:42 AM	#8 (permalink)
Kastley85891 A True Z Fanatic Join Date: Nov 2009 Location: ATX 370 - Sold Posts: 1,149 Drives: 2003 Wagon Rep Power: 19	^Depends on your entire exhuast path - thats why I run a Y pipe ;-) __________________ Boosted V8 hunter 2850 lbs and 375WHP

12-28-2010, 01:57 PM	#10 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 23	man some dynos need to surface soon! sounds really good, cant stop replaying __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

12-27-2010, 11:21 PM	#3 (permalink)
Dan Z Man Enthusiast Member Join Date: Dec 2009 Location: North Carolina Posts: 286 Drives: 2010 PG 370z Rep Power: 17	well that's quite..interesting looking lol

12-28-2010, 05:09 AM	#4 (permalink)
VQinside Base Member Join Date: Oct 2010 Location: Atlanta GA Posts: 109 Drives: 2010 370Z Rep Power: 16	I'm sure its those little holes inside the stock muffler that take away the signature sound the 350z used to have

12-30-2010, 12:01 AM	#12 (permalink)
VQinside Base Member Join Date: Oct 2010 Location: Atlanta GA Posts: 109 Drives: 2010 370Z Rep Power: 16	potential client still waiting for decibels here

01-01-2011, 10:56 PM	#13 (permalink)
Vince's Red-Z Base Member Join Date: Sep 2010 Location: Wylie, TX Posts: 71 Drives: 2010 370Z Red Sport Rep Power: 16	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. __________________

01-03-2011, 08:16 PM	#14 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 23	yes pairs any updates or dynos? __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

01-03-2011, 08:33 PM	#15 (permalink)
Kastley85891 A True Z Fanatic Join Date: Nov 2009 Location: ATX 370 - Sold Posts: 1,149 Drives: 2003 Wagon Rep Power: 19	Show us Zee muffled options... ;-) __________________ Boosted V8 hunter 2850 lbs and 375WHP

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