Not to toot our own horn, but if you've never experienced the joy of a Sprint Booster, you gotta give it a try.

You can find some information on the latest V3 versions at http://new.minimania.com/part/SPRMI0...50-r61-F55-f60 or at https://www.sprintboostersales.com/

They really are worth while to put into your MINI. Plug-n-play. Easy to do.

(And they work just as great on other cars. Find them at www.sprintboostersales.com)

 

I am too stupid to understand how this work after watching the video. BMW automotive engineers must be morons like me.

 

In my previous post the video that I watched is this one which left me scratching my head how it constitute a "How It Works" video.


I inferred after watching the video that it is essentially an inline device that remaps the potentiometer analog voltage that is a function of degree of pedal travel. To give you the "faster" throttle response impression, it fools the ECU to think the paddle has been depressed farther. What I mean by remap is it effectively changes the resistance curve of the potentiometer. If you are familiar with volume control for the analog audio amplifier, it is like swapping in a logarithmic potentiometer in place of a linear one.

Here is an excellent writeup.

 

According to the Bentley high level block diagram the accelerator pedal has 2 potentiometers (two likely for cross fault diagnostic or redundancy). I want to find out if the accelerator pedal assembly merely contains passive electronic components like the two potentiometers, which is my guess as the engineers is very good in optimizing a design to reduce cost to minimum, as well as it being a relatively hostile location.

While these photos are not the exact Mini part, it is BMW of the same era. You can see there is not much to it inside, as well as supported by the circa $100 part price.










There looks to be just 2 wire wound potentiometers and a few chip capacitors. Hence the most the like of Sprint Booster devices can do is to alter the voltage the ECU receive relative to the pedal position. Contrary to the video suggests, it cannot alter how fast the butterfly opens or close. It can alter wider opening for a given depression of the pedal.

 

i know i am really late to this party but from going from an R52 auto with sprint booster to an R52s manual without one... i am so missing it. Would love to trade someone for the booster, auto for manual.