I know this product has received mixed reviews with quite a few people thinking they are straight up gimmicky. I have thought this way for years and that's why I never pulled the trigger on buying one...until now. The throttle response (in any driving modes) is horrendous. I thought this was turbo lag at first but upon further testing, it is not turbo lag, it's the first 1-2 inch of dead pedal travel.

I have looked up several similar products, such as pedal commander, but decided to purchase the Sprint booster instead because the controller is tiny, literally about the size of my thumb. What's nice is that it can remember its current setting and I can disconnect the controller completely (after finding out which mode I like) and store it elsewhere. I find that the drive mode select is enough to change the driving dynamics so I found a setting that I like and disconnected the controller so that I don't have to stick it on the dash or somewhere else in the car, I like a clean look.

There are 2 modes, Sport and Race (and Off), with each mode having the sensitivity ranging from 1 - 9. I set it on Race 6 and it is amazing. I was afraid that it would feel jerky, but not at all. I actually have full control over my throttle and can feather it very lightly if I wanted to, which was actually a huge problem with me on the stock pedal mapping. I used to depress the pedal about an inch without getting much response so then I depressed it a bit more and the car would lunge because all of a sudden the throttle body opens up. I literally had no control between 1-20% of pedal input it seemed like.

This product is very interesting if you look up YoutTube videos on how it actually works. It not only shifts the throttle curve over so that depressing the pedal a small amount results in a larger throttle body opening, it actually SPEEDS UP the opening of the throttle body itself, thus making the response closer to a drive-by-cable system in older cars, which is much, much more direct.

Sure, the Sprintbooster makes it feel like my car has more power now because it remaps the throttle, but that wasn't my reason for getting it. I wanted to get rid of the dead pedal travel and also have more control over my throttle input. To be honest, at $300, it IS pricey since it's not actually doing anything like a tune would, but it improved drive-ability greatly and the extra power really does make the car feel a lot more responsive and faster (yes, the pedal from 80%-100% doesn't add much due to the throttle mapping shifting over).

Just thought I'd post my experience in case anyone is interested in the product or want to get rid of that dead pedal travel without having to pay $2k for a tune. I also did not want to risk voiding my warranty in any way and this was the perfect solution for me. It can be installed in literally 5 minutes and be removed in the same amount of time. I am not affiliated with Sprintbooster in any way.

 

They may claim this but it just isn’t true. You could argue that it can demand a larger throttle opening quicker than your foot speed can depress the pedal more than usual, but that’s just it, it’s semantics and pure marketing. It remaps your throttle and does this as advertised, but if one thinks that the motor in the throttle body can move quicker than originally designed from the addition of the Sprint Booster, I’d take that with a pinch of salt.

 

I will admit that a lot of these things may be just marketing but I saw this video and it would be pretty disappointing if they lied about the behavior seen here. Sure, it may not mechanically be similar to a drive-by-cable system, but the end result does look like the throttle body opens quicker. Watch starting at 46 seconds:

 

Interesting. One nice thing is that the throttle closing rate is still slow, which is probably good for turbos.

The latest year for W205 is stated as 2018. I sent an inquiry about later models like my 2021.

 

I did end up getting one of these a few weeks after my post above. I'm still using it today. Zero issues, throttle feels nice and responsive. I know it's not adding any extra power but I really like the feel of it. I have it set on the second highest sensitivity and then unplugged the module so now it's always at that set sensitivity. The car's drive modes (Comfort/Sport/Sport etc.) all still work properly with this.

 

Ramsino, What year is your car?

 

Installed one in my X5M, loved it so much, ended up installing in my 2002 E55 and 2014 E63s. The thing totally transforms how the car accelerates. Thinking about buying one for Son's Camry v6-XLE and wife's 530i

 

2020 C43. I'll admit, it is a little on the pricey size just to enhance throttle response, if that's how you look at it. Sprintbooster is the brand I used. They're the original, or at least the first that came out with these. I know I've seen quite a few different brands.