Is routinely driving in Quiet Exhaust mode harmful for the 2019 Mustang GT engine?

[Dawn]

I have active valve performance exhaust.

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[Spork3245]

No. The valve opens up as needed dynamically.

 

[FruityJudy]

No or they would have put some kind of stipulation

 

[NoVaGT]

Is routinely driving in Quiet Exhaust mode harmful for the 2019 Mustang GT engine?

Yes.

Ford deliberately installed an exhaust system that is harmful to the engine.

From the factory.

But it's an option on the car, you can skip it and not harm your engine.

 

[Bikeman315]

Yes.

Ford deliberately installed an exhaust system that is harmful to the engine.

From the factory.

But it's an option on the car, you can skip it and not harm your engine.

Dawn, he’s kidding........I think

 

[Jmtoast]

There's a rumor that running in quiet mode lowers testosterone production so your engine might suffer. Car should be fine though.

 

[TheSnowmanMafia]

An owner got black flagged at a track day because even in quiet mode the exhaust opened up at high rpm and made too much noise.

Thats the dumbest shit I've ever read.... I cannot understand why race tracks have restrictions like that and on top of that if the car has the stock exhaust why they'd get flagged...

 

[boB]

Thats the dumbest shit I've ever read.... I cannot understand why race tracks have restrictions like that and on top of that if the car has the stock exhaust why they'd get flagged...

Because some race tracks are near residential areas and have limited open exhaust days; because the Mustang active exhaust opens up at high rpm/full throttle and exceeds the noise limit; it's nowhere near the dumbest shit I have ever read.

 

[tokuzumi]

Because residential areas were built near some race tracks

Fixed for accuracy

 

[nastang87xx]

Yes. You better trade it in and get a Telsa. There isn't an exhaust system on the car so the engine can't be damaged by back pressure. Wait a sec..............

 

[Jmtoast]

Nah, I'm with TheSnowmanMafia, a stock exhaust car that is road legal shouldn't be banned from a fucking racetrack. Next thing they're going to ban people for posting too fast of a lap.

GT isn't even in the top10 of loudest cars. GT350 wouldn't even be allowed in.

 

[nastang87xx]

They move as needed even in quiet mode. An owner got black flagged at a track day because even in quiet mode the exhaust opened up at high rpm and made too much noise.
It seems like they also cycle on startup to keep from sticking. Mine is in quiet mode most of the time.

What race track? It unfortunately does depend. Stupid Laguna Seca...

One of my local tracks has a sound restriction too but it's pretty high. Milwaukee Mile. We limit to 105dB. Which is pretty effin' loud.

 

[nastang87xx]

GT isn't even in the top10 of loudest cars. GT350 wouldn't even be allowed in.

My 350 with a resonator delete hit 102dB with the right wind direction. 50 feet.

 

[Bikeman315]

I just came back from my daughters house and had the car in track mode. The S197 two cars in front of me made my car sound like a Tesla .

Does anyone have actual DB levels for the active exhaust?

 

[Jmtoast]

I just came back from my daughters house and had the car in track mode. The S197 two cars in front of me made my car sound like a Tesla .

Does anyone have actual DB levels for the active exhaust?

You need to remove your resonator.

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