AZhitman wrote:Which model Dynomax are you looking at? I may have a connection here....
Well there are 3 mufflers that would work,but they all have different pipe diameters. They are as follows...
Model - 17276 Ultra Flo SS: dual-in/dual-out, 2-1/2" pipe diameterModel - 17280 Ultra Flo SS: dual-in/dual-out, 2-1/4" pipe diameterBoth of these models are 25" in length
Model - 17231 Ultra Flo SS: dual-in/dual-out, 2-1/2" pipe diameterThis model is 19" in length
I don't know the stock Q45 exhaust pipe size, but a reducer or expander could be used to correct an off size. Any recommendations would be helpful. Oh....and I'm guessing the exhaust tone would be more that of a Mustang GT.