Hi, I wanted to give everyone my opinion of this package. I went up to see Phil yesterday and check on the progress of my car. He has done a lot of testing on the car, and the next step is the camshaft. I told him that I would like to take the car home for a couple of days and have the recalls done and also to evaluate Stage 1 with the Corsa installed. When I was up there last weekend for his Dyno Day, I just drove the car around town and not on the highway. I live about 90 miles away so I thought this would be a good test. I am very impressed with the way the car runs and the exhaust is awsome. I drove the same highway home as I did when I took the car up,and ran the same speed 60-65 mph. I checked the MPG on the way up and it was 24.4 and on the way home it was 26.1 - nice improvement. I ran it through the gears this morning, with the TC turned off. Woo, what a difference from stock. When I hit 3rd it started sideways untill stability link took over and straightened it out, next time i'll turn it off. The stock air box is still on, but Phil is working on this problem also. Also no more CAGS..completely gone. I really think for the money this is a very good upgrade that you will be able to fill in the seat of your pants. Thanks Phill, very nice job. http://www.cadillacforums.com/forums/showthread.php?t=22949