Don't mean to bug everyone with questions but need help. 08 mazdaspeed 3 I just bought. There is a constant rattling, banging, or knocking from the rear suspension, sounds like driver's side rear. The car has Megan racing suspension front and rear. It almost sounds like the shock is completely gone but don't think the car is bottoming out. I jacked it up, spun wheel, looked and banged on every suspension part but didn't see anything loose. Everything looks ok, but the noise happens on every single bump or hole, really every little change it sounds. Seems less noticable the faster the car is going, worse at slower speeds. With the aftermarket suspension and me not being a suspension expert, defer to you. Anyone have any concrete ideas?