I find some of this discussion amusing seeing that I have been down this road before. Unless everything I have read on exhaust theory is wrong the resonator adds very little back pressure. A big empty can is less restrictive to flow than an a container with baffels. I know that the w126 muffler is more a little more restrictive and muffles more than the w123's because it was the luxury car. I have no Idea about how a w124 stacks up in comparison.

About 3 people I know that have removed the resonator have spent good money putting it back in. They just got sick of the low drone at certain speeds, and not one has complained about any perceived loss of power.

As far as glass packs go, I have added a cherrybomb. When new it did muffle the volume of the exhaust quite a bit. I know this because when messing around trying to get the exhaust tip positioned right I pulled it off with the car running because I didn't have the clamps tightened. Even now packed with soot, it still quites the exhaust down quite a bit. I know because I checked it after I lost my tip last year when I backed into a snow bank. As far as the cherry bomb making my car sound raspy??? never!!! This is partially due to the fact I still have my resonator but it is also due to the fact I have a muzzled cali car

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green 85 300SD 200K miles "Das Schlepper Frog" With a OM603 TBO360 turbo ( To be intercooled someday )( Kalifornistani emissons )
white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
desert storm primer 63 T-bird "The Undead" (long term hibernation)

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