Somebody will probably tell me what I am hearing is normal, the way it just is, forget about it. But, I'm going to ask this board anyway. Here's the deal - I've been on a kick to make my 1993 240 sedan as quiet inside the cabin as possible. To do this, I have replaced all of the suspension bushings with new rubber ones, replaced rear muffler and catalyst, added the extra insulation under the dash (from diesel 240), replaced shocks/struts (Sachs Advantage), and put on softer tires. All of this has helped, but I can still hear the 4 cylinder drone from the tailpipe in the left rear. I'm not sure, can the tailpipe groan be amplified by the flat door glass, front and rear? Or possibly the sound comes through the driver's rear door somehow? That's where the sound seems to originate. Would putting a down facing extension on the tailpipe help? Even better, quieter mufflers - just finished putting on the best grade Exhaust Pros had. I know this subject has been discussed quite a bit on this board, but it does seem kinda strange that a Honda Accord (non rice-rocket) car has a completely quiet exhaust note, but the more expensive Volvo is kinda trucklike. Common sense would tell you the opposite should be true, right? Long stroke engine exhaust is just plain louder maybe? This is a 1993 car, so maybe the sound deadening insulation is about as good as it got, right? Or, should I add the undercarpet pad to quieten it more? I'm about out of ideas. I'm hoping the experts on this board can offer a serious explanation other than "get used to it, that's the way 240s are". Thanks guys.