SprintBooster button >> M3 SPORT Button mod doityourself

[328ioc]

So, I'd definitely say do the tune first. The SB is like a placebo. It increases the signal to the "drive by wire" throttle so you FEEL like your pushing the accelerator down hard but with a lighter touch. The car feels faster, but in reality, it's not. It feels more responsive as you barely have to put your foot down, and it takes off. So, for me, the driving experience is better. You could get the same thing for free by mashing the pedal to the floor every time you drive. This is more fun. Oh, and yes, you can definitely tell the difference.

Awesome news. I do plan on doing both eventually the question is which first lol

[johnrando]

Awesome news. I do plan on doing both eventually the question is which first lol

Given the choice, I'd do the tune first, as it improved my responsiveness, and gas mileage.

[328ioc]

Given the choice, I'd do the tune first, as it improved my responsiveness, and gas mileage.

Yeah I ment to to add that at the end that it will probably be a tune first but I had a senior moment.

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[Hornung418]

Sprint Booster decreases the signal time it takes for the engine to realize you've pressed the gas pedal down. The delay is almost 1 second. I found it unbearable driving Marc's ZHP, having driven a Cable actuated throttle for the past 2 years. It's definitely a worthwhile modification to increase the response time and downshifting becomes incredibly easy. I'd do that first. The tune's ability to alter the throttle response is pointless because the DME will adapt the throttle to adjust to the driving style. There is a sequence you can follow to clear the pedal adaptations. That may help with your decision.

[johnrando]

Good info. My point really wasn't about the throttle response from the tune, it's that in general performance is increased and the car feels more responsive overall (not just the throttle) from the tune.

[Ryans323i]

That looks great John! Really well done and executed. Hats of to you and William for getting together and putting in werk!

[johnrando]

Thanks. It's actually William wsmeyer that gets all the credit. I just had the idea, he made it happen.

[webster]

Sprint Booster decreases the signal time it takes for the engine to realize you've pressed the gas pedal down. The delay is almost 1 second. I found it unbearable driving Marc's ZHP, having driven a Cable actuated throttle for the past 2 years. It's definitely a worthwhile modification to increase the response time and downshifting becomes incredibly easy. I'd do that first. The tune's ability to alter the throttle response is pointless because the DME will adapt the throttle to adjust to the driving style. There is a sequence you can follow to clear the pedal adaptations. That may help with your decision.

exactly! the difference between SB on (even just in the green setting) and SB off is night and day. you can't simply "mash your foot down" faster to achieve the same thing the SB does, it's physically impossible. there is still a throttle delay. with the SB on (green) it's perfect for daily driving. no more wait half a second on a downshift, the throttle response is immediate. when the SB is on the red setting, holy cow batman! the car will literally jump back on its haunches and throw you into your seat. one of my favorite mods.

oh and btw, the sport button project is awesome and looks super professional. great job!

[cakM3]

Lots of good info being passed out here...I know what my next mod for my ZHP will be!

[johnrando]

As soon as I installed it I had to send my car back to the body shop, so I've been without it for 5 days and only got to use it once. When I picked up my car, I got in, pushed that Sport button and thought, "this is SO cool!". lol