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Another +1 for Dynomax

Back in a Bowtie

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Back in a Bowtie Enthusiast

Back in a Bowtie

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Had my Cat-back VT system on for about 2 months now and it has developed a rattle at cold start. Basically every morning when the motor is completely cool the pressure varies enough to cause the valve in the muffler to bounce around. Love every part of the system except this, makes my new $45k truck sound like an 89 honda with 3million k on the odo. Got in touch with the guys at dynomax and they are sending me a new muffler to swap out. Super simple, great customer service.

Rawyzf Senior Enthusiast

Rawyzf

Posted
Posted

Had my Cat-back VT system on for about 2 months now and it has developed a rattle at cold start. Basically every morning when the motor is completely cool the pressure varies enough to cause the valve in the muffler to bounce around. Love every part of the system except this, makes my new $45k truck sound like an 89 honda with 3million k on the odo. Got in touch with the guys at dynomax and they are sending me a new muffler to swap out. Super simple, great customer service.

 

Can you let me know (via PM if you want), who you contacted at Dynomax, or what number?

Back in a Bowtie Enthusiast

Back in a Bowtie

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from what ive been reading they don't. probably why they haven't asked any question and are just sending a new one. the new ones use a steel wool type packing between the bottom of the valve and the muffler body, maybe mines missing or shifted out of place, will know more when i get it off

Back in a Bowtie Enthusiast

Back in a Bowtie

Posted
  • Author
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Can you let me know (via PM if you want), who you contacted at Dynomax, or what number?

 

just called their customer service number (1.734.384.7806 ). I think the first guy i spoke to was Dan, could be mistaken though

Rawyzf Senior Enthusiast

Rawyzf

Posted
Posted

 

just called their customer service number (1.734.384.7806 ). I think the first guy i spoke to was Dan, could be mistaken though

 

Thank you!

 

I have this rattle as well, but it's not every morning. Maybe 1 in 5.

Back in a Bowtie Enthusiast

Back in a Bowtie

Posted
  • Author
Posted

 

Thank you!

 

I have this rattle as well, but it's not every morning. Maybe 1 in 5.

 

mines anytime it sits for more than 5 hours (i guess that's how long it takes to fully cool the engine / oil) lol

tnchevy Senior Enthusiast

tnchevy

Posted
Posted

My first dynomax VT muffler in the cat back system had a rattle, you could hear it when I took it out of the box. Sounded like a weld that got loose inside. The folks at Tennaco (dynomax) were helpful and sent out a new muffle within a week. Still had drone in V4 mode with the gas slightly pressed so I used their 90 day warranty for a full refund. It has been 7 weeks since they got my system shipped back to them and still no refund check but every week I call them they say it is in the mail.

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