Vibration under load

[SlowSnake]

I just got the cobra back together from installing mm urethane IRS bushings. Now I have a bumping and it seems to be the rear. It only happens with the car on the ground with the suspension loaded. I have looked at everything I can think of. I don't see any point of contact for anything to be hitting on the body. I've checked brakes sticking to DS bolts to differential bushings everything seems to be like its supposed to be. Has anyone had this problem before? Do u have to preload the bushings like u do the stock ones? Help please

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[SlowSnake]

Nobody has an idea? I know its hard to say a certain thing is wrong when u don't see for yourself but does anyone know what else could cause it or what else I can check?

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[03 DSG Snake]

What kind of bumping?

 

[hotcobra03]

tail pipe on rear?

 

[SlowSnake]

Seems like the breaks sticking. But they aren't Pipes are secure.

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[hotcobra03]

Seems like the breaks sticking. But they aren't Pipes are secure.

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how about the bar for front of diff? i cant recall if thats a 1 way fit .but will sill go in wrong?

 

[SlowSnake]

Cobra r crossmember ? I haven't checked that or the vibration damper. Can someone post a pic of how its supposed to look

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[hotcobra03]

how about the rear cover,,did you change that...

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[SlowSnake]

I didn't do a cover I have the BF brace

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