I am very happy with
I am very happy with the IOPedal for my Sprinter. I primarily purchased it for the high-idle capability so I could recharge my house battery while parked for an extended period of time, however I have found that the pedal tuning is a valuable upgrade to the stock throttle response of the Sprinter. I feel like it eliminates the turbo lag very well and lets you dial in the exact throttle response you want for your style of driving. Highly recommended (and install is super easy, less than 30 minutes with 1 person)