I have a Stillen muffler on my 98 Maxima sc'd and it was a sleeper. I just installed my Y-Pipe (Thanx WSP) and I changed everything from the Y-Pipe back Hi flow cat and performance B-Pipe all 2.5 sounds/feels great but now I can really hear the Stillen muffler.

My machanic told me my cat was plugged and my flex was leaking thats why I didn't hear the real stillen muffler.

My Question is: If I was to change out my Stillen muffler with a 01 or 03 Maxima muffler would I loose any flow, I know I would loose some of the sound.
please give feed backs...