Ordered the midpipe on the 6th, at my door and installed on the 10th. Absolutely love it. Install was simple (provided you have the right tools) and really improved performance and sound. I opted to remove the cats as well...highly recommend using an air chisel. Start to finish (including remapping PCV) was about 3 hours. If you're considering this mod and looking at the other options available, M4 is a top notch product; very well built w/ good install instructions and Biohazard Cycles price can't be beat.