Originally Posted by 07wrx4life

If you have Camber plates In the rear then you will need to tighten down the top bolt which Is a 17mm I think with an Impact gun, I have the same exact series BC coils and I had that problem, I tightened them down with a regular ratchet and It still made the noise. So I called BC and asked them what they do and they told me to use an Impact gun on the top bolt. Solved It for me.

I'm talking about the upper tower bolts, This only applies to you If you have rear camber plates. I'm not sure what regular top hats look like with these coils.