After having my middle muffler replaced, my car seems more noisey than it was originally. The problem seems to be a lot of resonance or low "tuba" sound when when the car is running at about 1500-2000 rpm. The part that was replaced is the correct part number (126 490 52 15). Do I need a new rear muffler? Is this the type of sound that would be caused by a bad rear muffler? Thanks!
Joe Van Blerck
1990 300SE 130,000 mi
1993 400E 85,000 mi