I have like 4 of their products installed (Axleback Exhaust, strut tower bar, rear sway and interior LED’s). All of them have been great besides the rear sway bar. I noticed slight interference from the beginning and it was wishful thinking that it would just stay the same or eventually settle itself. After the track it’s moved and now it’s squeaking and annoying me and the car. Before purchasing I did ask if they fixed the interference problems and they said they did, but idk I keep seeing more and more customers telling the same story as me.