Watch: How the Mustang GTĚs Exhaust Valves Work - Ford Mustang Forum
 
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Watch: How the Mustang GTís Exhaust Valves Work

Itís one thing to understand a concept, itís another entirely to see exactly how it works. Thankfully, Borla set up a rig to let us see just how the Mustang GTís stock exhaust valves work. Ford gave the Mustang a couple of drive modes that change the Mustangís volume pretty substantially. This is effectively accomplished … Continue reading Watch: How the Mustang GTís Exhaust Valves Work

The post Watch: How the Mustang GTís Exhaust Valves Work appeared first on AllFordMustangs.




Itís one thing to understand a concept, itís another entirely to see exactly how it works. Thankfully, Borla set up a rig to let us see just how the Mustang GTís stock exhaust valves work.

Ford gave the Mustang a couple of drive modes that change the Mustangís volume pretty substantially. This is effectively accomplished by turning a butterfly valve at the exhaust tips.

The system does more than just that, though, and itís pretty interesting to see the valves flutter through the rev range.

To show us how it works, Borla cut off the exhaust pipes just after the mufflers and attached them to a piece of steel that sits inside the car. They then rerouted the valve motor wiring and just let the Mustang do its thing.

As youíd expect, in quiet mode the valves are all but closed, while in track mode theyíre pretty much wide open. The really interesting sound engineering happens in normal and sport mode when the valves are really doing a lot of work to manage the sound coming out of that 5.0.

With the valves inside the car (and not actually attached to the exhaust system), you canít hear the difference, unfortunately, but the video below gives you an idea of what the different drive modes sound like.



The post Watch: How the Mustang GTís Exhaust Valves Work appeared first on AllFordMustangs.


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