Just put on Spt catback on my 08 sedan two days ago and I'm starting to notice some squeaking. I'm thinking its rubbing up against the third bracket on my RA mud flaps (the one in the top left). I think in the next couple days I will go through and re-tighten all the bolts and nuts.
Anyone else have this problem or know of any solutions?
Could be the exhaust rubbing a heat shield. Yes, it is a "stock" exhaust but there is a chance that one was bent during install or from something bouncing up from the road. Make sure you check for any signs of rubbing.