It's absolutely awesome! They quote 430 BHP but I have not dyno'd it and don't plan to either. I have several posts regarding the Kleemann on benzworld.org under the same "LOCHS 2" I.D. I use for all of the MB boards if you want to read more about my previous reflections.

I have never driven an ML55 but the technician at Knauz who installed it said it was very "ML55 like in performance". He was the only person other then me that I have allowed to drive it. I plan to get one of those toys you put on the dash that does 0-60 times and such to get actual results...off the line it is MUCH quicker but it is a heavy vehicle and sitting high up like we all do in our MLs you can't really feel it like you would in a CLK for example. What I like best about it is when you are at speed. Say, when I'm going 30 or 45 or 60 and then just gun it, it really moves. There is so much power at the higher RPMS but it has incredible low-end torque. At 88 MPH I'm only at 3,000 RPMS and there is plenty of power to take it to whatever top speed it can do...I won't ever find out because 90 is as fast as I'll go.

I had it installed with 67K miles on the odometer. I've driven over 5,000 miles with the kompressor and it is flawless. Even with the temp in the 90s and the air on full blast it just goes like it was factory installed. Of course in the cooler night air it spins much happier.

Kleemann sells it on "comfort power" and really it is. I don't worry a bit about it. I had an issue with the oil seal as it was leaking from the cap but not enough to drip on the driveway. I had Knauz fix that for me.

You can really hear the kompressor at work too. It's not quiet...but then again it's not overly loud either compared to other supercharged vehicles I've been in[I have owned a '92 GMC Typhoon and also a '03 Xterra S/C]. I put a supersprint exhaust kit[sport muffler and pipes] on it and it does not sound like a MB anymore...but again not like a dual pipe Ford or Chevy truck. I think it is tasteful but purists might disagree. I'll post some pictures of my ML when I get a chance. I've done a lot to it!

Anyone that ventures to my side of town I'll gladly take you for a ride in it!