I get it
 

When I used to have a 2000 MustangGT, it had 2 throttle return springs. I removed one spring and instantly got quicker throttle response! It didn't make it any faster, but it did make it much more responsive and fun to drive.
So I can see the point of this product assuming it works as advertised.

I think there is something being overlooked here. The ECU's sensitivity to voltage changes is increased by this adapter. As any OFT user can tell, throttle sensitivity drops after loading a tune. I think this is because the signal is below a certain threshold, and the ECU drops that threshold over time as it "learns". I think the "off-idle" transition is at a very low signal strength, and is hard for the ECU to recognize, immediately after a flash. If this adapter sends a more recognizable signal to the ECU, it would eliminate that "off-idle" delay that infuriates every drive-by-wire performance driver.

They provide a dyno map on their site:

http://www.sprintboosterusa.com/

The dyno is not related with our cars, but it gives a proof that it is not just a throttle remap for response.

this is what I don't understand. the thing plugs into the throttle pedal connector. it does not plug into the OBD2 plug to flash a new tune to the ECU. as far as I know, the throttle pedal connector does nothing other than send a voltage signal to the throttle plate and/or ECU. it does NOT read or write anything to the ECU.

with that said, how would this device change anything other than a more "responsive" throttle and add more power? the throttle plate can only open so much... you can't open it 120% for extra power.

It cannot give any more power. The throttle plate motor opens to its maximum position on the OEM settings. This is confirmed by logging the TPS voltages. All the ECU does is calculate the desired throttle valve from the pedal voltage, which is learnt. By changing the input does not mean that the output can be any larger. At all times on this ECU if you command WOT you get WOT. This isn't an FB20 where the torque and throttle tables are integrated with boost settings etc. It's purely for throttle plate mapping.

Totally a false dyno map, dyno your car with and without it. You're being conned.

A nice video that explains the details of sprintbooster. You can see also the delay in the throttle body:

[ame="https://www.youtube.com/watch?v=MyJtac6d05U"]Sprint Booster on 'Performance TV' - SEMA SHOW 2013 - YouTube[/ame]

Throttle control used to be so affordable.

http://il3.picdn.net/shutterstock/vi...67/thumb/1.jpg

You didn't watch the video.

You didn't get the point I was making.

Oh yes, apologies:


Throttle control used to be so affordable.

;)

http://www.miata.net/garage/images/throttle.jpg