Bully Dog 44632 Rapid Power Performance Module

2007-2009 Mercedes 3.0L Diesel
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The Bully Dog 44632 Rapid Power Performance Module improves fuel economy and adds power to your Mercedes 3.0L V6 Diesel engine. This is achieved by increasing the efficiency of the fuel injection system. Results show increases of 35hp and 40 ft.-lbs of torque. The installation is extremely easy and takes no more than 20 minutes. It also does not require any mechanical experience since the modules come equipped with OEM-style plugs.


  • Easy Installation
  • OEM-Style Plugs
  • +35HP & 40 Ft-lbs

07-09 Sprinter 3.0L
08-09 Grand Cherokee 3.0L
07-09 E 320 3.0L
07-09 GL 320 3.0L
07-09 Sprinter 3.0L

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(19 Ratings, 2 Reviews) Average Rating:
mark (texas) 3/20/2011 10:30 AM
i've got this module on an 08 2500 high top short sprinter installed it with slightly less than 1500 miles on odometer now showing 10,250. Since it was added early into my ownership I can't tell if it truly helped much with MPG but,it did add some go! It woke the van up from 0 to about 60MPH but, don't pull out expecting to pass ANYONE on a two lane road. The Sprinter falls flat after 70 MPH & it takes an airport runway for it to reach its pre-programmed top speed of 80 and the BullyDog doesn't change that! I'm use to driving an 06 RAM w/cummins with a chip as well and it's difficult to drive the Sprinter after stepping out of the RAM a completely different driving experience!
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Russ (Golden, CO) 12/6/2009 10:48 AM
I am in awe of so many benefits yet no downside IMO. I expected and got throddle response and acceleration, but I expected it would be at the cost of MPG. After about 3000 miles my highway is about the same or a slight improvement (like 1 mpg) but city is more like 2-3 mpg. Not a great deal but when I can get this plus the fantastic performance I am very happy. I should also mention it provided less turbo lag--a BIG plus. My application is 2008 Jeep Grand Cherokee CRD.