axle dampner

You don't need it most remove to make their car lighter the ford tech is correct. I think it's called the "dog bone". Yank that bad boy out.

It's NOT the dog bone, they are the horizontal shocks in the rear end, and I wouldn't ditch them until you get some quality aftermarket lower control arms. They keep your rear axle from twisting.

"Twisting" really isn't the right term. Those dampeners are the quad shocks and are there to control wheel hop. Wheel hop occurs as the rear tires repeatedly lose and regain traction. It's caused by flex in the control arms.

In may situations, you can ditch them all together, but it's always best to wait until you've installed quality aftermarket LCAs first.

I'm taking mine off when I get a torque arm and panhard bar. Otherwise I wouldn't. Even with aftermarket control arms the design of the suspension included quad shocks.

larrendeuce said:

I'm taking mine off when I get a torque arm and panhard bar. Otherwise I wouldn't. Even with aftermarket control arms the design of the suspension included quad shocks.

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I'm of the the philosophy that unless there's a reason for it, get rid of it (the K.I.S.S. rule). But you're right. The factory design included the quads but that doesn't mean that you need to keep them, especially considering Ford's design methodology:
"Sir, we have a problem with wheelhop in about 10% of the cars. Should we fix the problem?"
"No, just slap something on there to hide it and call it a day."

In my opinion, I think they have an appreciable effect on only a few of the Mustangs out there.

Mine have long since been removed, but that was only because I was installing LCAs and coilovers at the time. YRMV