I'm thinking about buying a Sprint Booster. Sometimes there is to much lag when switching from reverse to drive so just let me know what you guys think and if its worth the money?

 

I see you are new....welcome! Hope you are loving your car!

This topic has been debated and beaten beyond a dead horse, perhaps beyond three of them! As far as I am concerned, push your foot down further for a free Sprint Booster equivalent. Sprint has nothing to do with gear change....it's an artificial change to the throttle response. SEARCH will help you find a wide range of opinions, just as might once again form here if we don't stop the madness right now.

 

Your lag from reverse to drive can be fixed. I had the same issue on my 2010. It would take about 2 seconds before it goes forward and if I press on the gas too much it will jerk forward after 2 seconds. So I had to be patient. I took mine to the dealer and they fixed it.

I also have a sprint booster and as sportstick said, it's the same as pushing the pedal further. But if you don't like having to do that then the sprint booster is actually nice to have (at least for me anyway). But it will still not fix your issue. Just take it to the dealer and get it fixed

 

I use it everyday in my W203, I must say I couldn't imagine driving without it. Yes you can press your pedal to the max kickdown to get the same output. Yes it doesn't increase horse power, however in the case of the W203, it eliminates a crap ton of throttle lag, it increases the throttle response in terms of sending a higher input imitating your foot further down on the pedal however unlike just mashing the pedal the Sprintbooster adds a huge level of control where your not constantly downshifting getting too much power and releasing up all the way, you can gauge your throttle pedal movements for more aggressive driving much easier.

Ie. Sprintbooster off push down throttle to about 3K RPM, then engage Sprintbooster fully the rpm gets up to 5K without moving the pedal, again it just simulates you pushing further down on the pedal however you get much more control.

Rather than constantly pushing to the kickdown point on your throttle pedal you just push down half way I seem to have more control when I like to accelerate from stop to speed limit area quickly.

For me it was well worth it to eliminate the throttle lag and to gain more control where the vehicle would be more quicker to downshift as you wouldn't be going all the way to the kickdown point to get a downshift when your already up there in terms of RPM.

Example for my case cruising around 60kmph if i disable the sprintbooster and I push the pedal till kickdown I jump to third gear from 5th, if i engage the sprintbooster for some odd reason I jump always into second in that case 60kmph being street speed limit or on ramp speeds then kicking it down to get onto the highway.

Everyones got their own opinion on the Sprintbooster for me I personally think it's worth it for the quicker response without having to constantly mash the throttle and more control over your throttle. Works great if your aggressive with your throttle. For me I'm just wanting to get up and go and easily downshift to pass people by a simple pushing further with more control.

There are two applications there is Sprintbooster which I use and have not a single issue with, and theres another with apparently more control called Pedalbox however no personal experience.


Note the Sprintbooster will make no difference in your lag from Reverse to Drive or from Drive to Reverse, it only deals with the throttle input.

 

Will it accelerate faster?

 

It will feel like it's accelerating faster just like if you press the gas more on your stock car. Because, essentially that is what the sprint booster is doing. But you will still have some lag. I have about a half a second lag on occasion even with the sprint booster. But again the reverse to drive lag you have is a different lag and can be fixed by the dealer. The regular lag cannot, even with a sprint booster. If you want to get rid of throttle lag, you will need to get an ECU tune. Search for Eurocharged. I've read good results with their ECU tune. I'm not saying don't buy the sprint booster as I love mine since I don't have to press the pedal as much, but don't expect it to get rid of lag.

If you still want to know about sprint boosters, just google it. There are plenty of info online and multiple threads you can read. They make them for a lot of makes and models as well so you're not stuck reading input from just Merc owners. But as sportstick said, this subject has been beaten to death here. So this is probably the last time I'm going to answer any sprint booster question you may have.

 

I have put in my car a Pedalbox and i am very happy, i was thinking about that the Pedalbox is bigger than the SprintBooster but okay now i learn with it. It gives you many options to play with it and i love it.