My car sounds wierd
 

My car sound wierd on bumps or even whille driving slow. The sound is coming from the back and it sounds as if Im driving over a bump even though im not. my friend says its the suspension but I dont know because he is not a pro he jus thinks.. Does anyone know what could be making the sound?

kinda hard to come with a diagnosis without hearing it, but if it sounds like that and you have somewhat stability issues it can be a blown shock

how much is it to replace the shocks? and is it bad running like that, if I dont do anything about it?

With a blown shock you should be bouncing up and down all the time.

I'd get your suspension fixed instead of bolting on a turbo.

omg your right, when I go on bumps (especially in the freeway) I jump up and down, even if the bump is small and I'm goin 70 on the highway, one bump makes the rear passangers jump. So what should I get fixed? the shocks or the suspension? thanks for the help you knew exactly what the problem was.