I had the original flowmaster 40 series on my last merq and talked to a guy from flowmaster about a deeper unlabored sound he then explained that the super 40 series was made fo rhte ford 4.6 just as the original was made for the 5.0 i hade the put on runnning 3" pipes back from the cats and 2 1/2" pipes out to the 12"x3 1/2" rolled tips and man i love that sound, MEAN! :banana:
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My new super40 series.
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