Remove center box or not?

[abharoochi]

Hi,

I am planning to repair/replace my exhaust system and so far the powerflow system is what I have in mind. what I would like to know is: Can I remove the center box entirely and run it straight to the rear silencer? What would it sound like and how will this affect fuel consumption?

Thanks

 

[danieljames]

I wouldn't remove the centre box. If your pipe is too big you'll lose back pressure and have zero torque low down....and then consumption would suffer. I stand corrected but this is my understanding.

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I stand under correction.

 

[Ralf*]

the centre box is in many instances just a resonator, to prevent droning sounds
90% of all the silencing is done by the rear box
So removal of the centre box will not change the sound very much

 

[S1NGH 911]

What car are you planning on carrying this mod out on?

In lots of cases there is a secondary CAT lurking in the center box, making this mod an all round win :coolshake:

 

[Gizmo]

Moose removed the cat on his 318is and replaced it with straight pipe, made the car sound like a toyota tazz, he then fitted a silencer instead and the car sounded pretty stock again but with the benefits of no cats.