I got some tein comforts installed in my 05 coupe and made sure everything was tight but I hear a slight rattle in the area of the pass. side rear suspension? What would make that noise and what can be done to make it go away?

Had the same issue with my Tein CS many years back. The shock was faulty and I ended up sending it back for a warranty repair. When it came back everything was fine.

Check my past posts....hope it helps!

I know the feeling it use to drive me crazy.