Source
r/infiniti•
technoaviator

Valvetronic...?

Hi y'all, so I own a 2008 Infiniti G35. I recently purchased and installed the Valvetronic Universal Exhaust Dual Muffler System, got it installed, and had two exhaust tips from Amazon that had high reviews. After paying more than $1k to get them installed, I noticed the car become slightly louder, however, it was not what Valvetronic had advertised for their system. On top of this, opening and closing the valve does not change the sound of the exhaust at all. Any possible explanation as to why this is happening? Is it just that my engine is not cut out for a Valvetronic system? Is there something else that I am missing in this equation to get a loud car that can become quiet from a button? Any help would be much appreciated.

Posted Sep 8, 2023, 2:40 PM UTC

16
SpawnDC5•

https://youtu.be/_okMmHYtIeE?si=2wBwqgolCl2-YPuD

If you aren't getting a sound difference at least like in the video then something isn't done right. The valves dump the exhaust right before the mufflers, basically eliminating the mufflers, which should double the sound of your exhaust. Are you sure the valves are opening correctly?

1
technoaviatorOP•

https://photos.app.goo.gl/9yEEQm3THZJo2y46A

Here's a video of it. Valves are open idk if u can see but am I missing something to the equation here?

1
SpawnDC5•

So, you got the valvatronic dual mufflers, right? What size? Does that mean you used stock piping for the rest of it?

1
Jreify'09 g37xS sedan•

I have the varex valved muffler and it changes dramatically. Is the rest of you exhaust stock? I feel you need bigger pipes to get a more dramatic effect

1
technoaviatorOP•

I have the 2.5s, and yes the rest of the exhaust system is stock except for the tips

1
Jreify'09 g37xS sedan•

Yeah I would change your whole system. The muffler doesn't magically make it loud. It has to be loud to start then the valve makes it quiet. Get some test pipe, 2.5 inch piping, 2 vibrant ultra quiet resonators, then the mufflers.

1