I recommend cutting the resonator out. It about 50lbs and gives better flow of the gasses leaving your engine.

As for K&N, all I know is that the better a car breathes, the better it performs. However, I would rather by a new filter and replace it more often then using the same one over and over.

I know people who use K&N, and they are better then the stock ones, but people who use K&N forget to clean them and that is the disadvantage to them.

Other then that, I really haven't gone down the route of the other mods cause they tend to be expensive for MBs. It was cheaper for me to drop and old 3.0 from a 300E then try to fix up my 2.6.

Good Luck.

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Chirag (Charlie) Patel

99 Mercedes-Benx ML 430 V8 w/custom TV, Video, UHF, speaker system
93 190E 2.6 w/ an amp, equalizer, and CD-changer, integrated w. stock stereo for integrated cellular phone speaker system
2001 C-Class - Maybe