Sprint Booster anyone?

I don't have a SprintBooster(SB) on my Porsche, but I do have it on my 2019 Mercedes GLA. In that car (which also has a "sports button") it makes an incredible difference. I was ready to sell the car until I put the SB on, now I'm perfectly happy with it.

Just do a search on Youtube (https://www.youtube.com/results?search_query=sprintbooster) There are lots of "real world" examples.
I'd highly recommend watching this one done by a serious enthusiast in an N52 BMW: He evaluates the effect on 0-60 time's by doing 5 launches without SB then 5 with SB to demonstrate the difference.

Results:
Without SB: 7.69, 8.02, 8.28, 7.71, 7.52 seconds Average 7.844 seconds
With SB: 7.51, 7.25, 7.24, 7.26, 7.2 seconds with an Average 7.292 seconds
over a half second improvement

I would say this mirrors my experience -- you can definitely feel the difference. I run it at a RM4 (One of the lower Race Mode settings) with the "Sports" setting turned on in my GLA.

My Porsche is a 2013 981 Boxster S with PDK. I've considered a SB for it, but, unlike the GLA, it really has adequate performance for my purposes right out of the box. People who have installed a SB into S's have said that it can become unpleasant in daily use (although it's incredibly easy to turn off).

For a little under $300 this is probably the best mod I've ever invested in. If you want better throttle responsiveness, it's an excellent solution.

Skoosh1970 said:

......to be honest i find the difference between sport and race marginal to say the least....?

Click to expand...

I suspect it depends a lot on the car. In my GLA, the lower "Race" settings feel similar to the higher "Sport modes". With 18 different programs *, there's might be some overlap in lower throttle positions depending on your car's capabilities and the OEM mapping. For instance, I don't feel a big difference between S9 and R1, but there is certainly a big difference between S9 and R9 (R9 makes my GLA almost undrivable on public roads, the throttle becomes way to sensitive). Even in R4, you gotta be careful parking when you go into reverse.

* 18 for auto, 18 for manual in Sport or Race
.

I bought the Sprint Booster to aid my torque curve from the apex to the exit and beginning of the straight. Sort of like the guy above from a standing start only moving. I had a Wavetrac LSD installed a couple of years ago, but was never completely happy about the car's response from the apex. The initial response to throttle just seemed slow, as the ECU learned bad behavior by not giving immediate throttle responses during street driving. The ECU software picks up my moderate driving style made possible by the very controllable Wavetrac LSD. I have a Softronic flash which I talked directly to Scott to include a fast throttle body reaction.
So, I slipped on my very soft soled car loafers and pushed the red #5 button. These shoes are a very important element as they are the sensory between me and the throttle. With the Red race button pushed, I can modulate in tight corners or long sweepers to my hearts content, mid corner to change the weight distribution setup for next corner, down shift blipping, or standing on the gas to squeeze into that space on the freeway without downshifting. What i wanted was a snap response to help with rotation using my new set of car shoe's RE71RS. Well, that rotation and modulation are a benefit of its quick action.
The Sprint Booster definitely helped the ECU get the right message. The slalom sections are a combo of both modulation and rotation so it certainly helped there. I have a sense that threshold braking with Sprint Booster, the throttle body closes faster as well allowing engine braking to occur faster.
I've got Scott's Softronic 987.1 race kit that includes an older 78 mm GT3 throttle body and plenum. At 2000 rpm, I floored it and it took a while for the air/fuel mixture to catch up, but at 3500 and flooring it, a totally different picture, instant pickup when Scott's Softronic ECU maps kicked in. .

I noticed that the Red 5 really does make the throttle response immediate. It also changes the engine braking response as well. I would suggest to look at the throttle/foot contact which means your shoe. Heavy soled leather just do not conduct the right message, you need a very soft soled almost slipper that can give immediate sensitive response. Even entering a freeway on ramp and seeing an opening in traffic, the Sprint Booster Red 5 can have a sensational impart if you select the right gear to get it done. I drive a MT Cayman. I love the sensation of the motor reaction and even braking. Even in traffic rolling along at 30 mph, I can feather the motor downshifting through the gears into 1st almost to a stop without touching the brake.
Did i tell you I hate brake dust. My brakes are in top notch condition, yet still I have to clean my wheels more than my car. I have tried to get PCCB's (no brake dust and 6 pistons in front) but so far none available. So, its the SB that allows my motor to do this work,