Sprint Booster any FHE, Opinions, etc.

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Old-Duckman

Active member
 SW Pennsylvania USA
I guess it was the first successful throttle response controller. Many knock offs out there too. I have watched many YT videos and it looks interesting and not too expensive, under $300 USD.

I also wonder how it would interact with the sport mode button.

FHE most interested to hear, thoughts, opinions etc also appreciated.
 
I think it’s a great bit of kit for the money. I fitted mine a month age & the improvement in throttle response is amazing in race mode. I use it in conjunction with sport mode & DTC when I’m on suitable roads.
 
I have one, in my '03 roadster. Bought on Ebay for next to nothing and fitted for a little over six years now:

20131004_172308.jpg

20131005_155919.jpg

The combination of race mode on the Sprintbooster and Sport mode in the Z4 is actually very aggressive. This combination can only be used under suitable circumstances, too uncomfortable for day-to-day use. The combination of twice the sport mode (both Sprintbooster and Z4) is more workable for me.

Also, if you are not using the sport mode on the car, but use the sport mode or race mode on the Sprintbooster, you get the increased throttle response the Sport mode on the car has to offer, without the changes in steering teh Sport mode on the car has to offer. That can also be nice for a change, depending on circumstances.
 
Thanks for the replies. Amazon has it for no interest, pay over 12 months. Sounds like a worthwhile addition for not much outlay of cash. Think I’ll go for it!
 
How do these pedal box tuners compare to getting the ECU remapped on a naturally aspirated engine? On a NA wouldn't both do the same thing?
 
All these things do is fool the ecu into thinking you are pressing the accelerator more than you actually are. They just make the throttle more sensitive, i.e the first couple of cm = 100% instead of the whole pedal travel.

Here’s a tip...instead of wasting a load of cash, just press the throttle a bit further!
 
ph001 said:
All these things do is fool the ecu into thinking you are pressing the accelerator more than you actually are. They just make the throttle more sensitive, i.e the first couple of cm = 100% instead of the whole pedal travel.

Here’s a tip...instead of wasting a load of cash, just press the throttle a bit further!
Click to expand...

Ahhh, not really. Go to their website or some YT vids from the more professional video creators (not just people who put them on their vehicles) to get an accurate assessment of the product. They have a demonstration using a throttle pedal and throttle body mock up. There is a built in delay between the two from the factory. This device modifies that delay or lag. The demo mock up shows that nicely in a visual way far better than I could explain it.

If your Z has a Sport Button and you’ve used it, it’s like that...Modifies throttle response. But instead of one setting, it has two with 9 levels in each setting. Watch some videos if you care to...quite interesting and most average guys just installing them on their vehicles are pleased, and impressed, with the results.
 
I've provided a link to an article below that write about these a lot more (with input from the makers of these devices)

After reviewing some of those videos (both the official & unofficial ones) my understanding is the standard electronics in the throttle pedal have 2 preset maps/configs - normal & sport. These will give you a different % throttle application depending on how far you press the throttle, but has the same 'signal delay' due to the route to the ECU & throttle body being identical (the official videos showing an artificial 2 second delay between application & acceleration are laughable)...and despite what they say, it will not & cannot improve max acceleration as 100% throttle is 100% throttle.

BTW, the only 'delay' I've ever noticed in mine is the time to move my foot from 0% to 100% - so that's about the only delay that these booster will reduce - at the expense of removing any linearity of throttle application. Great for on/off track/autocross, not so much for a slippy autumn drive.

The only 'increase' you'll possible see is the time it takes for the driver to move his foot between pedal positions - and if that difference is worth it, then fill your boots - as you're obviously a driving god where every 10th counts.



For example (using figures for ease of illustration, not actuals)...

Normal:
  • 1cm = 0% throttle
  • 2cm = 0% throttle
  • 3cm = 10% throttle
  • 4cm = 20% throttle
  • 5cm = 30% throttle
  • 6cm = 40% throttle
  • 7cm = 55% throttle
  • 8cm = 70% throttle
  • 9cm = 85% throttle
  • 10cm = 100% throttle
  • 11cm = broken throttle

Sport:
  • 1cm = 10% throttle
  • 2cm = 20% throttle
  • 3cm = 30% throttle
  • 4cm = 40% throttle
  • 5cm = 50% throttle
  • 6cm = 60% throttle
  • 7cm = 70% throttle
  • 8cm = 85% throttle
  • 9cm = 100% throttle
  • 10cm = 100% throttle
  • 11cm = broken throttle

So if I put my foot to a specific point to get off the lights (say 30%), then the only difference will be how much throttle is applied - not how quickly it is applied.

These 'boosters' just change these configs (i.e. it remaps the acceleration curves), so that for example your new sport mode becomes:

BOOSTED 'SPORT' MODE
  • 1cm = 10% throttle
  • 2cm = 25% throttle
  • 3cm = 40% throttle
  • 4cm = 55% throttle
  • 5cm = 70% throttle
  • 6cm = 85% throttle
  • 7cm = 100% throttle
  • 8cm = 100% throttle
  • 9cm = 100% throttle
  • 10cm = 100% throttle
  • 11cm = broken throttle

BOOST 'RACE' MODE
  • 1cm = 10% throttle
  • 2cm = 50% throttle
  • 3cm = 100% throttle
  • 4cm = 100% throttle
  • 5cm = 100% throttle
  • 6cm = 100% throttle
  • 7cm = 100% throttle
  • 8cm = 100% throttle
  • 9cm = 100% throttle
  • 10cm = 100% throttle
  • 11cm = broken throttle
...or whatever it stored in one of their selectable configs.

Or to put it more visually:
chart.png
 
mmm-five said:
I've provided a link to an article below that write about these a lot more (with input from the makers of these devices)
Click to expand...

Thank you for the link, charts, response etc...with the exception of the ad hominem blast, " as you're obviously a driving god where every 10th counts.", uncalled for sir...moving on. I did read Outback Joe's (OBJ) article with interest and the vast majority of the replies and his responses to those replies.

Even though some who responded to OBJ were disputing his research both his statistics and your charts are pretty indisputable IMO. However the value of the device seems to be mostly subjective. Many actual users (of which OBJ was very late to actually try on his own vehicle. The company sent him a free one to try and it took him over a year to install it. Though he did eventually try it and removed it and stated "...it wasn't suited to how I like to drive and how I use my vehicle.") were pleased with the results after installing the unit.

That said, I feel I have nothing to lose giving one a try. Should I not like it I can return it for a refund.

I found more positive reviews online than negative and if it's only a perceived welcome addition it is (to those users) a welcome addition to their vehicle.

I found it quite interesting how often OBJ mentioned it be a "Placebo Effect". And, indeed it may well be but...many illnesses have been relieved or even completely cure by taking placebos.

Time will tell in my case as I am willing to give one a try.
 
All these quotes by people about don’t be lazy or press the throttle further have not actually tried the unit. The ACTUAL ACCELERATION especially in RACE mode dramatically improves throttle response. Like I said if you want faster acceleration, the Sprit booster is worth every penny. Unlike an ECU remap you can always remove the device and sell it on eBay.
 
I hardly use my sport button anyway so this would be totally superfluous to my needs tbh.
:D
 
Ladderman said:
All these quotes by people about don’t be lazy or press the throttle further have not actually tried the unit. The ACTUAL ACCELERATION especially in RACE mode dramatically improves throttle response. Like I said if you want faster acceleration, the Sprit booster is worth every penny. Unlike an ECU remap you can always remove the device and sell it on eBay.
Click to expand...

...what a load of utter shite!
 
ph001 said:
Ladderman said:
All these quotes by people about don’t be lazy or press the throttle further have not actually tried the unit. The ACTUAL ACCELERATION especially in RACE mode dramatically improves throttle response. Like I said if you want faster acceleration, the Sprit booster is worth every penny. Unlike an ECU remap you can always remove the device and sell it on eBay.
Click to expand...

...what a load of utter shite!
Click to expand...
Here’s a tip for you fella. Don’t start a slagging match, what gives you the right to think i’m talking a load of shite. If you are a so called lifer on this forum you should know better. So keep you rude opinions to yourself
 
Please refrain from abusive language on this forum. I have removed the posts but any further offensive language will not be tolerated.
 
sp3ctre said:
Please refrain from abusive language on this forum. I have removed the posts but any further offensive language will not be tolerated.
Click to expand...

...I did put an 'e' on the end!
 
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