Just curious, I have the black coated street series Magnaflow's on my car. I had to send the first set back due to the coating flaking off inside the tip. While waiting on the warranty process to go through I ordered a second set and installed them yesterday, today after less then a 100 miles the coating is flaking off of this set too. Magnaflow and it's distributors are working with me so far. Just wondering if anybody else has this problem.