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Frank - 10/26/2022

Biggest issue with cls63 amg is the lack of throttle response. It feels like it bogs down for a couple seconds before letting loose. I figured I'd give the sprint booster a shot since its priced at $300 as opposed to changing the programming of the car and risking engine problems. They say it takes 10 minutes to install but thats if you have all of the right tools in front of you when you start. Took me about 20 minutes, most of it went into locating the control unit (which i ultimately stuck to the front of the tach so I don't accidentally touch it while driving but its still easily accessible to change). Talk about a monster difference! Green 5 is now where I keep it. I tried red 9 setting and it was like full race ready. At green 5 I can be going 60 on the freeway and when there's an opportunity to pass slower traffic i only press the pedal down about 1/2 inch and it immediately kicks down the transmission and I take off up to 110 in maybe 3 seconds. This thing is by far the best performance upgrade for the money. Keep in mind that the cls63 amg has over 500 horsepower and that might feel way more noticeable than a car with less. I cant say what will happen on a lower horsepower vehicle but I can absolutely say that on my ride its like an entirely different car. Love it!

Company Choice

Read a lot of forums about fixing slow throttle response and many people recommended it.

Product Choice

Saw a video online showing exactly how it works to fix slow throttle response.

Vehicle information

2008 Mercedes Benz CLS63 AMG