[BEAR-AvHistory]

Originally Posted by Brett530

That is really the essence of its value. Try pressing the throttle very quickly and stopping at 1/3 travel. Maybe with 100% focus you can do it, but it is very difficult to not overshoot how far you want to press it. Foot/ankle muscles are just not that precise (and I used to be a drummer). With the S.B. you don't have to press it fast and it is much easier to get the desired effect with a slow gentle push. It isn't that you can't replicate the SB with your foot, it is just far more effortless to do with the SB in place.

First thing I would think of is why do I want to push fast to 1/3 throttle? Second is why would hitting exactly 1/3 throttle on a fast push be important? Third thing is I believe muscle memory of what speed I want to be at with a short quick launch would be good enough for government work.

The flip side of that with actual less throttle movement to reach 1/3 throttle at the engine your imprecise ankle will lose fine power control not unlike steering that is too quick being darty.

Might not make a difference if the car is not putting down much power & can't slip the tires but if it is its not a good plan. Like you said earlier in dialing yours down.

[bimmer456]

Anyone use a sprint booster with a manual? I find the response with the B58 is improved over 335 and also shift with the paddles and console shifter to grab lower gears or be in the gear I want. I can pick a lower gear when coasting and have power on demand even faster than with any software solution as I know what I want to do before the car does given road and traffic conditions.

[rjd_F30]

It's definitely a cool product if you are in the same boat as OP, and like the front-loaded throttle mapping, but I'd rather have a more linear and accurate throttle, i.e. 20% pedal opens the throttle 20% (I know that's not how the stock mapping works, but the closer to that the better) as opposed to 20% pedal opens the throttle 50%. In the latter option you have less variability when you're deeper into the pedal. Different strokes for different folks

[BigJack75]

Wow fantastic review. I wanted to add the jb4 after warranty expired but I may just do this sooner.

[Brett530]

Originally Posted by BEAR-AvHistory

First thing I would think of is why do I want to push fast to 1/3 throttle? Second is why would hitting exactly 1/3 throttle on a fast push be important? Third thing is I believe muscle memory of what speed I want to be at with a short quick launch would be good enough for government work.

That was just an approximation. The SB was a cure for a system that was not well tuned - most likely software. On my 335, if I press the pedal slow, from a stop, there was sluggish response. If I press hard/fast it would usually lunge forward and often spin the tires. It was nearly impossible to launch in a spirited manner without mashing the pedal, which resulted in too much power. The SB somehow allowed me to give a normal, moderate speed press and get the transmission to cooperate for a smooth launch.

You may disagree on theory of operation, but I drove it for 2 years like that and it helped the car drive smoother and more predictably. The B58 doesn't need it. The SB ramps the throttle more than useful on the B58, and there is no hesitation to be solved like on my 335.

[aacocella1]

Originally Posted by jjhebigscreen

I have had the sprint booster for about a month. For you doubting thomases that think it is snake oil or are saying just push the pedal down further I say you have not tried the product. I have mppk and mpe which I thought made a nice difference in power and throttle response. I wish I went with another exhaust but that another thread. I can honestly say the sprint booster made a far bigger difference in my throttle response. It is so much more enjoyable. Revs build way quicker and the car feels significantly faster even though I know the sprint booster does not add power. This upgrade was the best thing I have done to the car. I have a smile on my face every time I drive the car. Im not a stop light racer as Iam 55 an those days are behind me but I must say I have kept two or three annoying cars from getting in my lane. I live in the city and these annoying drivers pull up to the stop light in a lane that is not truly a long term driving lane as there are parked cars ahead and you need to merge immediately. My other car is a 2017 mazda cx5. About 1 week ago I installed the pedal commander which is a similar product. Sprint booster did not make a v3 for my Mazda. The difference in throttle response and drive-ability is gigantic. I never really enjoyed driving the Mazda due to its sluggish throttle response. I now truly enjoy driving this great little suv. One thing I will say is since Im using higher revs more frequently I am able to enjoy the engine sound and exhaust a little more. On the downside my mpg have dropped about .2mpg but I consider this a worthy trade off. I also would think I a putting more stress on my over all car but again a worthy trade off.

IT JUST WORKS! It's not gonna turn you and your car into Paul Walker and his Supra. Sprint Boosters just does exactly what says in their description. I got mine from SprintBoosterSales.com for less than the actual cost + a discount and 30 day money back guaranteed. I'm a satisfied customer and no plans for returning it.

[aacocella1]

Originally Posted by Brett530

That was just an approximation. The SB was a cure for a system that was not well tuned - most likely software. On my 335, if I press the pedal slow, from a stop, there was sluggish response. If I press hard/fast it would usually lunge forward and often spin the tires. It was nearly impossible to launch in a spirited manner without mashing the pedal, which resulted in too much power. The SB somehow allowed me to give a normal, moderate speed press and get the transmission to cooperate for a smooth launch.

You may disagree on theory of operation, but I drove it for 2 years like that and it helped the car drive smoother and more predictably. The B58 doesn't need it. The SB ramps the throttle more than useful on the B58, and there is no hesitation to be solved like on my 335.

My girl friend drives a 2013 328i and her dad is a BMW mechanic and they both love it. I would drive her car and i hated how when a light turned green and i press the gas it wouldn't respond. I would have to wait for the car in front of me to gain some distance away from me so when i have to stomp the gas pedal i dont risk hitting them LOL

[aacocella1]

Originally Posted by bimmer456

Anyone use a sprint booster with a manual? I find the response with the B58 is improved over 335 and also shift with the paddles and console shifter to grab lower gears or be in the gear I want. I can pick a lower gear when coasting and have power on demand even faster than with any software solution as I know what I want to do before the car does given road and traffic conditions.

There's some videos on YouTube of Sprint Boosters being used on manuals. They have a switch on it for automatic and manual transmission. It works great on both.

[BEAR-AvHistory]

Originally Posted by Brett530

That was just an approximation. The SB was a cure for a system that was not well tuned - most likely software. On my 335, if I press the pedal slow, from a stop, there was sluggish response. If I press hard/fast it would usually lunge forward and often spin the tires. It was nearly impossible to launch in a spirited manner without mashing the pedal, which resulted in too much power. The SB somehow allowed me to give a normal, moderate speed press and get the transmission to cooperate for a smooth launch.

You may disagree on theory of operation, but I drove it for 2 years like that and it helped the car drive smoother and more predictably. The B58 doesn't need it. The SB ramps the throttle more than useful on the B58, and there is no hesitation to be solved like on my 335.

Yeah no problem, we can agree to disagree. Had 3 years in a 335is 7DCT JB4/COBB & 3 years in a 435 MPPK/MPE 8ZF. Never really had any issues with the throttle calibration being too slow.

Would also say the same with my 135is JB4 6MT. Good balance between throttle & clutch engagement. Might have a numb butt but the 440MPPSK feels the same as the others just quicker then the 435 & a little slower then the 335is.

As I said in the 335is I actually dialed it back to slow the throttle input because a short quick hit of the pedal would spin the 19X30X275 Conti DW's.

At the drag strip launched in 2nd gear under flappy paddle control.

[jjhebigscreen]

Hello All,
A lot of people in this thread are knowledgeable. Until you try the v3 on your own car your theories on why you dont need it and how it technically works etc....are just that... theories. Try the product and then you can comment from experience. It comes with a return policy and installs in 10 minutes.

[BEAR-AvHistory]

Be interesting to see someone with access to a Vbox do a before & after 0-30 & 0-60 run comparison.

White Paper on SprintBooster of independent test. 10 pages.

http://www.crosslake.net/~dbipes/spr...intBooster.pdf

"Conclusions:
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."

[bimmer456]

Originally Posted by BEAR-AvHistory

Be interesting to see someone with access to a Vbox do a before & after 0-30 & 0-60 run comparison.

White Paper on SprintBooster of independent test. 10 pages.

http://www.crosslake.net/~dbipes/sprintbooster/SprintBooster.pdf

"Conclusions:
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."

For the same money you can get a jb4 which improves throttle mapping and decreases acceleration times. A JB+ is cheaper still.

[jjhebigscreen]

Bear,
Im a little confused by one of your posts. Have you ever had a sprint booster on your car?

[mike@x-ph.com]

We will be posting a thread about throttle response modules comparing the different options available

[BEAR-AvHistory]

Originally Posted by jjhebigscreen

Bear,
Im a little confused by one of your posts. Have you ever had a sprint booster on your car?

Have Zero interest in it. Overpriced placebo, would not let one anywhere near my car. With the booster the pedal is pretty much dead past 2/3 throttle.

Sprint Booster's own web page says this:

makes your car "feel" more powerful

And this:

Sprint Booster does not increase horsepower your car feels peppier and more powerful.

Why would I spend $300 for a feel good item that does not increase power when I could spend $200 for a bottom end tuner that will actually increase power?

Or $379 for one with more power then a base unit depending on which engine you have.

As mentioned by WIRES your stock ECU will change the throttle map to a more aggressive one by going to Sport from Comfort.

[Wires]

Just push the drive mode from "normal" to "sport". Does almost the same for free, and your mileage doesn't got out the window from the SB not telling the ECU that you are perpetually jabbing the throttle on the highway.

[aacocella1]

For the people that think the company claims its a performance enhancer it says this on SprintBoosterSales.com

"PERFORMANCE QUESTIONS

Q: How much horsepower gain can I expect from Sprint Booster?

A: Sprint Booster does not increase horsepower. Sprint Booster changes the throttle response in the low to mid rpm range where cars spend a majority of their time. As a result, your car FEELS peppier and more powerful."

https://www.sprintboostersales.com/FAQ.cfm

It's making your car feel more enjoyable to drive. That's what most people want when they spend a good amount of dollars on a car that they drive everyday.

[kalien34]

It's very interesting to see how many people claimed they don't want SB or don't think SB is a good product because SB only changes how your car feels while they don't even really know how it feels because they never had one installed on their cars...

[mike@x-ph.com]

Originally Posted by kalien34

It's very interesting to see how many people claimed they don't want SB or don't think SB is a good product because SB only changes how your car feels while they don't even really know how it feels because they never had one installed on their cars...

We had a similar experience with the REMUS responder (which is very similar to the Sprint Booster) on another forum.

Users were very skeptical and 90% of the posts were negative until one of them tried it. Then it became our most popular product with 13 5-star review and 2 4-star reviews.

[anotheran]

Originally Posted by Brett530

I have moved to a '17 340i since writing the above review and the engine-transmission matching is quite a bit better (nearly perfect). So while I moved the sprint booster to the new car, I find I keep the setting pretty low since it just doesn't need as much help as the 335. The JB4 may also have something to do with it, but wheel spin starts to become a problem if I crank up the Sprint Booster too much.

rgilkes: I doubt an upgrade would change things much.

Op had a 2012 335i. Wonder if this had anything to do with the lag: https://f30.bimmerpost.com/forums/sh...6&postcount=89

And even Op mentions you don't need it as much in the newer F30s. Maybe it's a placebo or maybe it actually does something but for almost $300, it's not worth it to me.

[bimmer456]

Originally Posted by anotheran

Op had a 2012 335i. Wonder if this had anything to do with the lag: https://f30.bimmerpost.com/forums/sh...8;postcount=89

And even Op mentions you don't need it as much in the newer F30s. Maybe it's a placebo or maybe it actually does something but for almost $300, it's not worth it to me.

Yeah I'm good with sport + on the B58. For $300 you might as well get a JB4 and be making 400 horsepower.

[Gen13 F36]

I don't even know how to drive in comfort mode....I get worst mpg....against me driving on sport +😂