I recently installed some cobb springs on my sti a couple of days ago. Everything seemed fine until i went up a steep driveway and heard a pop from the the back right corner. I noticed that that side is little bit higher than the left and not sure what happened. I jacked it up and heard the pop again, not sure what it could be. I took my seats out and made sure the bolts were tight on the top but i think it might be something inside, I don't know everything looks fine. Any insight to this problem would be a help.

 

maybe the springs arent sitting in the grooves properly.
you can also try putting on washers about 2-3mm on the top 3 nuts.
good luck!

 

maybe the spring is not seated properly in the perch?

 

something not seated well? maybe unistall and reinstall. i know its a paint in the *** but you might wanna make sure nothign broke.

 

^+1. Also, is the top hat in the right position? May be part of the issue with one side higher than the other and would cause the spring to not seat properly.

 

I was getting a popping noise on steep driveways too. turned out to be my WL sway bar. all i did was tighten up the bolts and now it happens once every blue moon still happens though. ;p

 

I have the same pop and I think my sway bar is the source. Which bolts did you have to tighten?