Description:

Used and in perfect working condition with manuals/instructions. Please pm me if interested

--Racechip piggyback tune for W212 E63S with M157 $350 shipped within continental 48 states
Easy 30 minute install and adds somewhere in the neighborhood of 50-100 hp according to Racechip. I dropped my quarter mile time by 0.3 sec and added 4 mph to the trap speed with just this mod. Completely removeable if needing to take car in for warranty work and the dealer would not have a history in the ecu that the car was tuned. This is the reason I went with a piggyback like this instead of an actual ecu tune, and of course the cost as it's MUCH cheaper. May not give as much HP, but I always felt comfortable running the tune without causing damage to the drivetrain and I used it for over 10,000 miles with no issues.

--Pedalbox drive by wire throttle enhancer for W212 E63S with M157 $200 shipped within continental 48
A must have as it greatly improves throttle response and drivability. Settings/levels of throttle enhancement are adjustable via the programmer. Easy install.