Did you get the 40 Series Standard or Super 40 Series muffler. Why didn't you get the 50 Series SUV which is designed for V-6 engines and SUV's. The master mechanic from Flowmaster said to get the 50 Series SUV and not to get bigger pipes on a stock engine because it cause mess up the back pressure. I think the 40 Series is too loud froem what I here and I live in a complex with a whole bunch of old people and want an exhaust that had some nice sound but not to loud that would be noticed too much. Yet I do want the 40 Series but also want the 50 Series SUV because it is specifically made for SUV as to the 40 Series made for Street Cars not SUV's.