Are my exhaust valves modified?

[Bmac50]

So I’m a new owner to a 2017 gt350 and loving every second of the voodoo soundtrack. The car is very well taken care of. I got to meet previous owner and he was an older gentlemen who was very careful with it. It is for the most part all stock (except for very minor interior cosmetics) but one thing I’ve noticed when exhaust is in normal mode which is very quiet and I flip the exhaust to sport you can hear it open immediately and work as it should, but when they are open and I try to switch it to normal it does not sound like they close at all. Sometimes after 5 min of driving or so you can hear them close. My question is maybe are the valve motors modified in any sort of way to have them stay open?
Any knowledge is appreciated. Thanks!!

Sponsored

 

[Sletcher]

Valves should immediately close upon selection of Normal. Valves also close in 6th gear btw regardless of mode.

 

[galaxy]

Did you go look at it? The valves are visible just inside the tailpipe. Go flip the switch and then go look!

 

[AvalancheSVT]

that sounds like a defect to me.

 

[Bmac50]

Valves should immediately close upon selection of Normal. Valves also close in 6th gear btw regardless of mode.

Then something is definitely up with mine 6th gear I hear no difference and when I close them 2/10 times it will close but not immediately.

 

[Sletcher]

There is a possibility of corrosion depending upon where the car lived prior to your ownership.

 

[Bmac50]

Did you go look at it? The valves are visible just inside the tailpipe. Go flip the switch and then go look!

Yes! I looked when off. Open. Turned it on. Sounded and was indeed opened. Changed mode to sport back to normal, looked… open.

 

[Bmac50]

that sounds like a defect to me.

Was really hoping that won’t be the case, fingers crossed.

 

[BierGut]

Was really hoping that won’t be the case, fingers crossed.

They can be finicky and as someone mentioned prone to corrosion. Good news is that it's not that crazy of a replacement cost wise. Welcome to GT350 ownership.

 

[galaxy]

Every time I wash my car, I hit the pivot points on the valves with wd-40.

Sponsored