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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Sprint Booster - drive-by-wire throttle modification



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      09-14-2007, 01:11 AM   #1
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Sprint Booster - drive-by-wire throttle modification

Has anybody tried this??

http://news.windingroad.com/aftermar...print-booster/
http://www.mstuning.co.uk/pages/Sprint%20Booster.html

Last edited by Intricacy; 09-14-2007 at 01:34 AM.
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      09-14-2007, 01:31 AM   #2
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No, butI have seen a similar one is a Japanese magazine for Euro cars. I hear it does work though.
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      09-14-2007, 01:37 AM   #3
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Lots of guys over at mbworld.org have them on their AMG's and have said very good things about them. Didn't know I could get one for my 335.. need to look into this now!!
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      09-14-2007, 01:46 AM   #4
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      09-14-2007, 03:09 AM   #5
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Seems like it does what a sport button does. Kind of useless in a turbo application with the inherent lag... Great for NA engines and supercharged AMG cars
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      09-14-2007, 06:01 AM   #6
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The Sprintbooster works by remapping the throttle control signals so that your gas pedal appears more sensitive. Very much like a sport button in the M-cars.

Performance is not improved.. you will not gain any additional power from this device.

Useful if your gas pedal has plenty of dead travel. Tried it out in my M3 and it made smooth driving difficult esp on lower gears in sport mode.

Personally, I prefer my throttle pedal to have a long and linear travel. Makes it easier to modulate.
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      09-14-2007, 08:49 AM   #7
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Quote:
Originally Posted by dre335 View Post
The Sprintbooster works by remapping the throttle control signals so that your gas pedal appears more sensitive. Very much like a sport button in the M-cars.

Performance is not improved.. you will not gain any additional power from this device.

Useful if your gas pedal has plenty of dead travel. Tried it out in my M3 and it made smooth driving difficult esp on lower gears in sport mode.

Personally, I prefer my throttle pedal to have a long and linear travel. Makes it easier to modulate.


There was a heated discussion on M3forum about the sport button. About how it does nothing for performance, but noob insist that it made the car faster...


as someone mention, it remaps the throttle so that with a little tap, it'll be like pressing the gas pedal half way.

i'm not sure what it will do to this car, as we will have to fight turbo lag...esp. those that are modded.
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      09-14-2007, 12:57 PM   #8
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Quote:
Originally Posted by Spool View Post
There was a heated discussion on M3forum about the sport button. About how it does nothing for performance, but noob insist that it made the car faster...


as someone mention, it remaps the throttle so that with a little tap, it'll be like pressing the gas pedal half way.

i'm not sure what it will do to this car, as we will have to fight turbo lag...esp. those that are modded.
If that how this works, I can see the MPG going down pretty low with this mod.
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      09-14-2007, 01:03 PM   #9
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Quote:
Originally Posted by retrodrive View Post
If that how this works, I can see the MPG going down pretty low with this mod.


That's all it does, is making the gas pedal more responsive, you don't have to press it as much to get the RPMs up. I liked it in my M3 since it made city driving much more effortless. just nudge the gas and the car goes...
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      10-31-2007, 01:17 AM   #10
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ah perfect. i happen to be from mbworld.org and i have the sprintbooster on my C32 AMG. It was an amazing addition. i purchased it for $250 shipped and it was an easy installation. There is a drastic increase in throttle response and it is even easier to break the tires loose now. i cant imagine driving without it. i remember reading so much about it on the forum and how everyone said this is a "must do" modification. well it is and its great. i hope they make one for the 335i as well (if not, then something similar to it)
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      10-31-2007, 01:22 AM   #11
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Quote:
Originally Posted by jturkel View Post
ah perfect. i happen to be from mbworld.org and i have the sprintbooster on my C32 AMG. It was an amazing addition. i purchased it for $250 shipped and it was an easy installation. There is a drastic increase in throttle response and it is even easier to break the tires loose now. i cant imagine driving without it. i remember reading so much about it on the forum and how everyone said this is a "must do" modification. well it is and its great. i hope they make one for the 335i as well (if not, then something similar to it)
AKA Short Shifters =)
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      10-31-2007, 02:12 AM   #12
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my knowledge of the mods for the 335i are limited as i have not gotten one yet. during december, my C32 will be traded in for this lovely car, though it will be missed greatly. hopefully those JBS2 kits are quick enough to keep up with my aftermarket pullied C32, or i am going to be a little disappointed.
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      10-31-2007, 03:00 AM   #13
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for the desired effect of this device in our cars, u should get downpipes. quicker spool is what WE are looking for...
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      10-31-2007, 12:15 PM   #14
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The "sport button' is supposed to make the mapping more aggressive and change the shift points. When I test drove an AT 328 you could feel a big difference.
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      10-31-2007, 12:28 PM   #15
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Quote:
Originally Posted by Beer Goggles View Post
The "sport button' is supposed to make the mapping more aggressive and change the shift points. When I test drove an AT 328 you could feel a big difference.

There is no sport button outside of an ///M


Ur talking about DS mode on the AT?
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      10-31-2007, 02:00 PM   #16
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The only button on a BMW that increases power is the power button on an
M5/M6. Sport buttons only change the throttle sensitivity and putting the shifter in DS mode only changes the transmission shift logic. PERIOD
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      10-31-2007, 03:09 PM   #17
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I'm sure the M button does the same thing as DS

IF I could make a graph I would but I'l do it in numbers for example.

Throttle postion to actually throttle position

In regular mode the throttle position is less aggressive...example at 20% throttle it may only be 10% in reality, at 30/15% and so on.

In DS it may change that to be 20% position /25% or what is known as positive exponential. So realistically the car is producing more power and is more aggressive. I guess in simplest terms it's "more sensitive" but in reality it's making more power.

I test drove a new Subaru (the turbo outback) and it had a graphical illustration of the power out put on the dash. Limiting the fuel...makes less power.
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      10-31-2007, 03:52 PM   #18
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read the comments on the posted URLs:
Quote:
The Sprint Booster is a simple amplifier that multiplies the accelerator pedal sensor signal, making the accelerator pedal more sensitive. It does not eliminate any significant delay in throttle response, nor does it greatly improve acceleration figures. It does not change the adaptive throttle control programming of electronic throttle control vehicles. It does change pedal “feel”. This change in feel is interpreted by some as improved throttle response, acceleration, and a change in adaptive throttle control programming. Considering what it actually does, it is expensive.
EDIT:
The quoted text is actually a conclusion at the end of the following whitepaper, containing the testing and results made by a curious user. Cudos to Dick Bipes
http://frontiernet.net/~dbipes//spri...intBooster.pdf
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Last edited by judec; 10-31-2007 at 04:27 PM.
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      10-31-2007, 08:37 PM   #19
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wow sounds like a very intresting product... im very curious... the Sport mode in my dad's old e43m3 made a huge difference! would be VERY cool if they made this product for the 335 and/or made it so you could have a switch button, like a sport button!
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      10-31-2007, 08:47 PM   #20
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I have it on my Benz. Its a night and day difference.
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      08-28-2008, 02:51 AM   #21
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Perfect idea, otherwise you are in sport mode 100% of the time.

Quote:
Originally Posted by oddjob2021 View Post
wow sounds like a very intresting product... im very curious... the Sport mode in my dad's old e43m3 made a huge difference! would be VERY cool if they made this product for the 335 and/or made it so you could have a switch button, like a sport button!
Yes difference is huge. Pedal feels awkwardly unnatural now. (Just tried it). You touch it, and car just flies. Instaboost too. A little annoying when it down shifts when you dont want to and only want to build speed, not just rocket off.
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      08-28-2008, 03:08 AM   #22
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I have it on my Procede V3 6MT e93 335, It is really cool.
The car is much more responsive and also when you change gear the rpm drop is more limited, therefore the shifting appears to be much quicker.
No turbo lag whatsoever, you think you want to go and instantly the cars leaps forward, like on the new M3 when you push the sport button.
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