Front cats removed yesterday, coupled with catless Corsa X-pipe I could not be happier! It sounds like a total beast with valves open and stock with a push of the Mild to Wild button. No more heat build up As a bonus, although I haven't figured it out exactly, my mileage has definitely improved. I typically have around 380 to empty after filling up in Calgary and driving home to Golden. Yesterdays reading shows almost 500 to empty. Haven't had a chance to gauge seat of the pants performance as it was raining almost all the way. Unlimited Performance did the work, great shop, great people! Video to follow. On a side note, I drove through some Pea sized hail in Calgary, wow is that loud hitting the clear roof!