I just want to share with all of you my experience with a new muffler on my 1992 400e with 73k miles.
A few days ago, I was installing my Bilstein HD shocks in the rear when I noticed a few small holes in my rear muffler. Great. Perfect time for a new free flow muffler.
Well I looked at Remus, Ansa, Supersprint, etc... but I was not sure they were going to give me the sound I wanted. I even though about going with Flowmasters, but I DID NOT want it to sound like a Mustang or Camaro.
The guys at the exhaust shop suggested a Magnaflow. I said what the hell, if I don't like it, I'll try something else. I picked out a street series S/S dual tip.
Well they got it installed and it looks great, see pics. But more important is the sound. I wanted a mellow rumble, but something that still was appropriate for a MB. If you have every heard a Porsche 928 with a 32v engine start-up and idle, you know that sound I was looking for. Well..... I got it!
The car sounds awesome. At idle, there is a slight rumble. But throw a few revs and you know that this is NOT an I6 or V6 Mercedes.
Normal city and highway driving is basically the same as with the OE, you can not really tell anything has been modified. But under mild to heavy throttle, you hear a sound that is music to the ears.
As far as performance, well it FEELS stronger in the upper RPM range. Even if there is no performance increase, I am happy with the results.
Total cost, $289. That includes new hangers and welding. The guys at the shop did an EXCELLENT job installing it.
If you are in need of a new muffler or are just looking to enhance the appearence/sound, you may want to look at Magnaflow. They are stainless steel and come with a lifetime warranty. I went with the #14801. I don't know how it will sound on a 4 or 6 cyl, but on a V8, DAMN that sounds good!