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Dynomax mufflers anyone running ?

Started by 18SHO, February 27, 2019, 09:55:47 AM

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18SHO

There's a big 20% off sale on autozone for the dynomax axle back and was wondering what everyone thought ? I hear of surface rust issues but that's nothing big a little header paint before install and that's never a problem . Lifetime warranty against defect which would be inner rust out for original purchaser. How's the sound ? Better then stock ? I'll be eliminating 3rd cat and resonator soon too
2018 SHO PP factory stock for now
AJPTURBO E30 tune stock plugs .028 gap
5.25.19 12.53 @ 112.96 1.85 60FT 1850 DA 71 F
Best trap 113.61

ToMang07

Quote from: 18SHO on February 27, 2019, 09:55:47 AM
There's a big 20% off sale on autozone for the dynomax axle back and was wondering what everyone thought ? I hear of surface rust issues but that's nothing big a little header paint before install and that's never a problem . Lifetime warranty against defect which would be inner rust out for original purchaser. How's the sound ? Better then stock ? I'll be eliminating 3rd cat and resonator soon too
I think that's what's on mine.  I'll check.  It's loud, but I have the resonator still.... need to lose it. 

Sent from my SM-G960U using Tapatalk

~Tom~
2013 SHO - Stage 3 Snow Performance Meth, (2) SCT X4 with Unleashed, 3 Bar Map, MSD Ignition Coils w/Colder Plugs 170*TS, EcoPowerParts Hot Pipes & Tial-Q BOV) Stage 3 Motorsports Catless Downpipes 3" Cat-Back Exhaust, JLT Oil Separator, H&R Sport Springs, K&N CAI, Drilled and Slotted Rotors w/EBC Pads

ZSHO

#2
I think many members have had negative results with the Dynomax (Walker) mufflers which are  susceptible to rust and the elements IIRC and would avoid IMO!  Z


2013 Performance Package SHO| Livernois Custom Methanol Tune|3-Bar Map|Reische-170-Stat|Full Race Tial-10psi BOV in Black|PPE-Gloss Black Hot Pipes|EPP Dual Intake in Gloss Black|PPE Catted DP|Corsa Sport Cat Back Exhaust|H&R Sport-Springs|CFM Performance Billet Valve Cover Breather In Gloss Black|Llumar 20%Ceramic window Tint|MSD Ignition Coils in Black|Extreme Roof Spoiler|Redline Fluids all around|Gearhead Intercooler|First-SHO With Direct Port Alky-VP-M1-100%-Methanol Injection|LMS-Custom-Dyno-Tuned @ 415whp-465wtq| Best Trap Speed of 115.54 mph|

18SHO

Quote from: ZSHO on February 27, 2019, 12:09:44 PM
I think many members have had negative results with the Dynomax (Walker) mufflers which are  susceptible to rust and the elements IIRC and would avoid IMO!  Z

Looks like the rust happens on exterior surface, nothing a coating of heat resistant paint can't fix. I called dynomax and the mufflers are under limited lifetime warranty for defect and rusting out to original purchaser. I'm just curious on people's experiences, may not do it but for 270 bucks shipped it's almost worth trying out
2018 SHO PP factory stock for now
AJPTURBO E30 tune stock plugs .028 gap
5.25.19 12.53 @ 112.96 1.85 60FT 1850 DA 71 F
Best trap 113.61

18SHO

Quote from: ToMang07 on February 27, 2019, 11:49:58 AM
Quote from: 18SHO on February 27, 2019, 09:55:47 AM
There's a big 20% off sale on autozone for the dynomax axle back and was wondering what everyone thought ? I hear of surface rust issues but that's nothing big a little header paint before install and that's never a problem . Lifetime warranty against defect which would be inner rust out for original purchaser. How's the sound ? Better then stock ? I'll be eliminating 3rd cat and resonator soon too
I think that's what's on mine.  I'll check.  It's loud, but I have the resonator still.... need to lose it. 

Sent from my SM-G960U using Tapatalk

You think so? Hahaha let me know man
2018 SHO PP factory stock for now
AJPTURBO E30 tune stock plugs .028 gap
5.25.19 12.53 @ 112.96 1.85 60FT 1850 DA 71 F
Best trap 113.61

lamrith

I have the axle back and I love it.  it does require cutting the existing mufflers off and the Dynomax clamp on in their place.  Measure 3x ,cut once. 

I also have PPE Catted DP, but the Dynomax really added a nice deep rumble to the sound.  Def more and better sound than the stock setup and ended up just where I wanted it to be in terms of balance between tone and not being obnoxious or droning as a DD.

I got mine used for like $140shipped and have zero regrets.
'13 Sho PP, SCT x4, AJP 92-Octane rev6 (14psi&20spark) NGK 6510, 3Bar, K&N CAI, PPE Catted DP, Dynomax Axleback, 20*9.5 Voxx Lago w/ 275/40-20 GMAX AS-05.

18SHO

Quote from: lamrith on February 27, 2019, 01:47:29 PM
I have the axle back and I love it.  it does require cutting the existing mufflers off and the Dynomax clamp on in their place.  Measure 3x ,cut once. 

I also have PPE Catted DP, but the Dynomax really added a nice deep rumble to the sound.  Def more and better sound than the stock setup and ended up just where I wanted it to be in terms of balance between tone and not being obnoxious or droning as a DD.

I got mine used for like $140shipped and have zero regrets.


How long have you had them any rust or signs of durability issue?
2018 SHO PP factory stock for now
AJPTURBO E30 tune stock plugs .028 gap
5.25.19 12.53 @ 112.96 1.85 60FT 1850 DA 71 F
Best trap 113.61

ToMang07

Mine drones pretty bad @~2k RPMs.

Which is why I want to lose the resonator.

If it is Dynomax I'll shoot a video tomorrow.   

Sent from my SM-G960U using Tapatalk

~Tom~
2013 SHO - Stage 3 Snow Performance Meth, (2) SCT X4 with Unleashed, 3 Bar Map, MSD Ignition Coils w/Colder Plugs 170*TS, EcoPowerParts Hot Pipes & Tial-Q BOV) Stage 3 Motorsports Catless Downpipes 3" Cat-Back Exhaust, JLT Oil Separator, H&R Sport Springs, K&N CAI, Drilled and Slotted Rotors w/EBC Pads

lamrith

Quote from: 18SHO on February 27, 2019, 02:05:00 PM
Quote from: lamrith on February 27, 2019, 01:47:29 PM
I have the axle back and I love it.  it does require cutting the existing mufflers off and the Dynomax clamp on in their place.  Measure 3x ,cut once. 

I also have PPE Catted DP, but the Dynomax really added a nice deep rumble to the sound.  Def more and better sound than the stock setup and ended up just where I wanted it to be in terms of balance between tone and not being obnoxious or droning as a DD.

I got mine used for like $140shipped and have zero regrets.


How long have you had them any rust or signs of durability issue?
1.5-2yrs.  I do not recall exactly when I did it, but it was the spring after I got my car and I just hit the 2yr mark and they were used by prior owner for at least a year.  I have not been under the car in a while since it is parked outside and always raining in winter here.  I will try to take a peek this weekend if I get a chance.  I have had no issue with sound or durability that I have noticed and I tend to notice changes in my cars others do not.
'13 Sho PP, SCT x4, AJP 92-Octane rev6 (14psi&20spark) NGK 6510, 3Bar, K&N CAI, PPE Catted DP, Dynomax Axleback, 20*9.5 Voxx Lago w/ 275/40-20 GMAX AS-05.

18SHO

Quote from: ToMang07 on February 27, 2019, 02:06:43 PM
Mine drones pretty bad @~2k RPMs.

Which is why I want to lose the resonator.

If it is Dynomax I'll shoot a video tomorrow.   

Sent from my SM-G960U using Tapatalk


Sounds like you could have a ton of different mufflers, a lot of people strap flowmasters I see too and that's bad drone . let me know
2018 SHO PP factory stock for now
AJPTURBO E30 tune stock plugs .028 gap
5.25.19 12.53 @ 112.96 1.85 60FT 1850 DA 71 F
Best trap 113.61

18SHO

Quote from: lamrith on February 27, 2019, 02:29:31 PM
Quote from: 18SHO on February 27, 2019, 02:05:00 PM
Quote from: lamrith on February 27, 2019, 01:47:29 PM
I have the axle back and I love it.  it does require cutting the existing mufflers off and the Dynomax clamp on in their place.  Measure 3x ,cut once. 

I also have PPE Catted DP, but the Dynomax really added a nice deep rumble to the sound.  Def more and better sound than the stock setup and ended up just where I wanted it to be in terms of balance between tone and not being obnoxious or droning as a DD.

I got mine used for like $140shipped and have zero regrets.


How long have you had them any rust or signs of durability issue?
1.5-2yrs.  I do not recall exactly when I did it, but it was the spring after I got my car and I just hit the 2yr mark and they were used by prior owner for at least a year.  I have not been under the car in a while since it is parked outside and always raining in winter here.  I will try to take a peek this weekend if I get a chance.  I have had no issue with sound or durability that I have noticed and I tend to notice changes in my cars others do not.

Very cool
2018 SHO PP factory stock for now
AJPTURBO E30 tune stock plugs .028 gap
5.25.19 12.53 @ 112.96 1.85 60FT 1850 DA 71 F
Best trap 113.61

lamrith

One caveat to my experience with this.  We do not get snow here, maybe one day a year and melted by next day. (aside from the pummeling we got 2 weeks ago, 10" overnight).  Because of that and the uber greenies out here, we do not use salt on roads either, so we do not get the toxic rust other areas do.  That said we get steady rain 9mos a year so def have the wet climate..  Just something to keep in mind.
'13 Sho PP, SCT x4, AJP 92-Octane rev6 (14psi&20spark) NGK 6510, 3Bar, K&N CAI, PPE Catted DP, Dynomax Axleback, 20*9.5 Voxx Lago w/ 275/40-20 GMAX AS-05.

ZSHO

#12
Quote from: 18SHO on February 27, 2019, 01:14:33 PM
Quote from: ZSHO on February 27, 2019, 12:09:44 PM
I think many members have had negative results with the Dynomax (Walker) mufflers which are  susceptible to rust and the elements IIRC and would avoid IMO!  Z

Looks like the rust happens on exterior surface, nothing a coating of heat resistant paint can't fix. I called dynomax and the mufflers are under limited lifetime warranty for defect and rusting out to original purchaser. I'm just curious on people's experiences, may not do it but for 270 bucks shipped it's almost worth trying out
FWIW Here's an (interior) Pic of the Hallow Shell remains of the Dynomax muffler! Simply trying to help a fellow member out and best of luck to ya. Z
(Courtesy of Bamsho)


https://www.ecoboostperformanceforum.com/index.php/topic,299.msg139083.html#msg139083


2013 Performance Package SHO| Livernois Custom Methanol Tune|3-Bar Map|Reische-170-Stat|Full Race Tial-10psi BOV in Black|PPE-Gloss Black Hot Pipes|EPP Dual Intake in Gloss Black|PPE Catted DP|Corsa Sport Cat Back Exhaust|H&R Sport-Springs|CFM Performance Billet Valve Cover Breather In Gloss Black|Llumar 20%Ceramic window Tint|MSD Ignition Coils in Black|Extreme Roof Spoiler|Redline Fluids all around|Gearhead Intercooler|First-SHO With Direct Port Alky-VP-M1-100%-Methanol Injection|LMS-Custom-Dyno-Tuned @ 415whp-465wtq| Best Trap Speed of 115.54 mph|

18SHO

Quote from: ZSHO on February 27, 2019, 06:14:24 PM
Quote from: 18SHO on February 27, 2019, 01:14:33 PM
Quote from: ZSHO on February 27, 2019, 12:09:44 PM
I think many members have had negative results with the Dynomax (Walker) mufflers which are  susceptible to rust and the elements IIRC and would avoid IMO!  Z

Looks like the rust happens on exterior surface, nothing a coating of heat resistant paint can't fix. I called dynomax and the mufflers are under limited lifetime warranty for defect and rusting out to original purchaser. I'm just curious on people's experiences, may not do it but for 270 bucks shipped it's almost worth trying out
FWIW Here's an (interior) Pic of the Hallow Shell remains of the Dynomax muffler! Simply trying to help a fellow member out and best of luck to ya. Z
(Courtesy of Bamsho)


https://www.ecoboostperformanceforum.com/index.php/topic,299.msg139083.html#msg139083


Hahaha that's awesome , I'll be emailing and asking dynomax if this is qualified for sure under limited lifetime warranty cause that's defective for sure . I'll replace every time it does this for free they would go out of business
2018 SHO PP factory stock for now
AJPTURBO E30 tune stock plugs .028 gap
5.25.19 12.53 @ 112.96 1.85 60FT 1850 DA 71 F
Best trap 113.61

ecoboostsho

I had them on my last car (purchased MRT axle back for the 2013).  Sounds was okay but the tips quickly deteriorated in a MN winter so keep that in mind. 
2013 White SHO w/PP, Gearhead Tuned, 3 Bar, 160T, Plugs...Mess with the Bull and you'll get the Horn. :)
Previous 2011 Tuxedo Black SHO w/PP - 12.89 1/4 Mile