Helmholtz box removal

[WildHorse]

Like I said.. SOUND requirements,

Pretty much. From a Alfa Romeo engineer:

1. It reduces the resonance frequency through the induction tube reducing a natural rushing roar on road cars.
   
2. It provides a small reservoir of air to be used at immediate throttle response until above atmospheric pressure is increased in the induction tube reducing the initial delay in the response time.
   
3. It aids in engine braking when the throttle body closes, without it, the built up pressure would slightly force the butterfly to stay open longer. The resonator allows the laminar flow to reverse and reduce almost immediately by allowing the the flow to escape into a negative pressure chamber and then stored when full throttle is required straight after zero throttle input.
   
4. Sound reduction via often achieved by introducing carbon filtration and small inlet holes inside the resonator itself.
   
5. Because of the natural ability to initially respond to the need of increasing and reducing atmospheric pressure. It allows the plenum chamber respond to the cycle of opening and closing rapidly on a four stroke cycle more efficiently reducing back pressure in the combustion chamber.
   

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[cactus_kid]

It's both. Look it up. Why do you think it's there?

It's an EPA sound issue. Corvettes have them on the base models. Please post up your ME so that it can be compared to that of Tadge Juechter, the Sr engineer of Team Corvette. Evidently you are more knowledgeable than they.

 

[cactus_kid]

You don't want undesirable turbulence in an intake system, period. If the stock system has a 'box', it's because it needs it. If you want to remove it, remove it. It's not like it's going to lose 100HP. But it's there for a reason. The engine runs smoother with it, or Ford (or any other manufacturer) wouldn't spend the money to install it. Some cars don't have it because it's not needed. Mustangs have a freaking sound tube to put noise into the cabins, so it's not about not making noise, but do whatever you want with your car. I'm out of this discussion.

Promise ?

 

[Shibaman]

Not sure why you are all obsessed about this? Put an ex or a h pipe. Enjoy the sound.
I owned 3 Mazda Miatas for about 15 yrs. Always modded the motor. Intake....headers...high flo cat....exhaust. About 16 hp on a 1600 cc motor. Not quiet...sounded like a sports car ....perfect.
The other side of the coin...people talked about putting sound deadining in the trunk for the stock exhaust. Really? Stupid!
Come on. We own Mustangs...muscle....make them loud....fun!

 

[Shibaman]

Not sure why you are all obsessed about this? Put an ex or a h pipe. Enjoy the sound.
I owned 3 Mazda Miatas for about 15 yrs. Always modded the motor. Intake....headers...high flo cat....exhaust. About 16 hp on a 1600 cc motor. Not quiet...sounded like a sports car ....perfect.
The other side of the coin...people talked about putting sound deadining in the trunk for the stock exhaust. Really? Stupid!
Come on. We own Mustangs...muscle....make them loud....fun!

If you own a sports car...or muscle....let the sound ring!
When i was a puppy...my neighbor had a ferrari 246 gt. When he started it...music...the whole neighborhood heard it.

 

[cactus_kid]

Who's obsessed ? Not I. I simply asked if it could be removed. Not sure why Ford built it into the Bullitt intake when the GT 350 does not have it. The "C" tube on the GT 350 cannot be ordered by itself. Evidently, the intake was above the db rating Ford was wanting. Thus, we were stuck with the box. When it cools off in the fall, I'll take the intake apart and remove it. ymmv

 

[Shibaman]

Who's obsessed ? Not I. I simply asked if it could be removed. Not sure why Ford built it into the Bullitt intake when the GT 350 does not have it. The "C" tube on the GT 350 cannot be ordered by itself. Evidently, the intake was above the db rating Ford was wanting. Thus, we were stuck with the box. When it cools off in the fall, I'll take the intake apart and remove it. ymmv

You are nic picking..not important. Drive your car. Enjoy

 

[cactus_kid]

I am. Coming up on 1800 miles in the first week of ownership. I am in fact enjoying the Bullitt more than my departed '17 Z06. Damn car was too damn fast for its own good.

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