Well I have a question for the exhaust guru's.. A friend of mine has a pre 98 tour zetec and just put a magnaflow muffler (stainless fart can). We installed the muffler solo in the back and tryed it out no sound at all, he has stock exhaust.. So then we cut out the resonator, it now has a little growl. He is looking for a nice deep tone what would help his exhaust.. I was thinking possible bigger piping all the way from the flex pipe, but I dont know.. Advise please