As some of you know I had aTubi installed on Saturday after the Crystal Cove gathering. I did not have a chance to run the car until Sunday morning as it rained in the afternoon on Saturday. First off the Tubi is definately a GOOD thing. It is not obnoxious at idle although you can easily tell that it is not a factory exhaust. It rumbles and sounds more throaty. The real treat comes under load. There is a resonance inside the car around 2500 to 3500 rpm that may be annoying to some but it is music to my ears. The best sound comes under acceleration. I considered buying some test pipes prior to installing the Tubi as I thought it might not be loud enough by itself. I'm glad I didn't. I took a run up to the 76 Station off of Bonita Canyon and filled the tank up with some 100 octane gas. I also added a bottle of Redline Fuel System Cleaner. I am not sure what happened next except that the combination of the new exhaust, high octane gas, and fuel system cleaner ended up producing a totally different driving experience! The car seemed to pick up a solid 50 horsepower in terms of a seat-of-the-pants feel. I realize that this is very unlikely but it ran noticeably smoother, stronger, and obviously sounded awesome doing it! Anyway, it made me want to drive up and down PCH all afternoon! Someone else needs to grab some fuel cleaner and fill up on the 100 octane and see what it does. It is definately good for the car!