Less than 250 miles,these were on my 09 370z, no CEL thrown, I'm selling them because I want to go with the HFC's (tired of the exhaust smell). Surprisingly enough these things didn't stain the bumper at all, even on a white Z! I apologize for the crappy photo, they are currently on the car right now, I will take new photos after they are off the car.
Asking: $180 shipped
And yes, that is one of the test pipes next to the stock cat for comparison purposes.