What's that thing behind the muffler?

[austx]

When I removed my '05 exhaust sys to replace it with a Borla Cat-Back sys I noticed a round object, about the size of a frozen juice can, welded to the stock exhaust tube about 2 inches forward of the left muffler. I was told it's a "counter-balance weight." Can someone please tell me what it does? Should I have it welded to the Borla exhaust tube?

Tom

[LBPatt]

Re: What's that thing behind the muffler?

I don't have that on my 05 but it could be a resonator. I would not alter the Borla system, just install it as it directs.

[Leroy]

Re: What's that thing behind the muffler?

It's not the resonator, it's attached to one of the resonators that has to be removed to install the Borla system. I don't know what its purpose is, but my car runs fine without it. Leroy

[redwog]

Re: What's that thing behind the muffler?

I wonder too? The thing has NO exhaust running through it. I agree it is about the size of a small frozen orange juice can?
I would think it is way too small to be any kind of counter balance
even if it were pure lead. When we took my Factory mufflers off my
friend ask "what is this motor for" He thought it was some type of
electric motor?
It has to have a purpose but what I dont know?
Ted

[2FAST4U]

Re: What's that thing behind the muffler?

mmmm...I never saw that on my car, but it's an '02...maybe they didn't have them...But I still don't know what it's for...A picture might help?...
Claude. :sun:

[texasbird]

Re: What's that thing behind the muffler?

Afterburners

James

[Leroy]

Re: What's that thing behind the muffler?

It's on the one on the left. Leroy

[Ski]

Re: What's that thing behind the muffler?

Okay, afterburnER

[austx]

Re: What's that thing behind the muffler?

Ski, if it's an afterburner, wouldn't engaging it cause the Bird to fly in tight little right hand circles?

[Leroy]

Re: What's that thing behind the muffler?

Maybe it's a Global Positioning Transmitter that Ford put on to keep track of the Birds? Leroy

[Bird03]

Re: What's that thing behind the muffler?

I was told it's a "counter-balance weight." Can someone please tell me what it does? Should I have it welded to the Borla exhaust tube?

Tom

1. That is correct.

2. Keeps the two sides of the exhaust OUT OF BALANCE so they do not create a harmonic resonance when they are subjected to the same vibrations from the muffler.

3. No

[blue731]

Re: What's that thing behind the muffler?

Maybe it's a Global Positioning Transmitter that Ford put on to keep track of the Birds? Leroy

That makes sense...i've never seen one before. Interesting.

[austx]

Re: What's that thing behind the muffler?

Thanks Wes,
I assume the Borla sys doesn't need the harmonic interruper because it has only 1 muffler.

Tom

[joe166]

Re: What's that thing behind the muffler?

How long has the Federal Government had you under surveillance?

[Bird03]

Re: What's that thing behind the muffler?

Thanks Wes,
I assume the Borla sys doesn't need the harmonic interruper because it has only 1 muffler.

Tom

It could be, but that was not what I was thinking. The stock resonators are larger and absorb more sound energy than the Borlas. In the resonator, sound energy is transfered to vibrational energy. Since the Borla transfers less sound to vibration the balancer really isn't needed.