Purchased the magnaflow exhaust system inconjunction with the True Flow air intake system for a Hummer H3. I installed the air intake system myself. It was simple, just as the instructions described. I had the magnaflow exhaust system installed by a professional shop. It looks and sounds great. Not too loud. Just a little more depth to distinguish it from the stock system. I have noted a slight increase in fuel mileage since installing both systems. This was a primary motivation for purchasing both systems. Hopefully, fuel mileage numbers will improve after more driving and fillups. Overall, I am quite please with quality, look and sound of both systems.
magnaflow is the way to go, everything else can go blow.
i have now ordered my second exhaust system from magnaflow.the first was for my 2001 GMC 2500 crew cab,and the second was for my Hummer H3.Both were easy to install, look great and sound great. I've read other reviews from consumers that have said the exhaust was pain to install, that they had to do this or that to get it to fit properly. I've one thing to say, let someone else install it on your next magnaflow purchase who is mechanically inclined.