I've had my exhaust for a while now, no problems at all with it. As a matter of fact, I changed the oil today and when I looked over the exhaust all the pipes were still clean looking. That is impressive! This pic is right after I installed them...they are now perfectly centered. I'll post up an update once I get some time and daylight!
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Chris
Current: 2014 WRX Stage I + SPT / 2013 Hayabusa 202HP
Former:09 370Z 7-AT PW/Ark Type 2 exhaust/Evo R lip/TSW Nurburgring carbon