Burger Tuning Pedal Tuner
https://www.burgertuning.com/products/bms-pedal-tuner
Though this device does not add horsepower, its a great mod to have.
Had Sprint Booster V2 (E60 M5) which is also a great device. SB costs more & you have to make sure you get a model that works for your car.
BMS has 1 device that supports all BMW models & its $100 cheaper vs SB V3. I do prefer the small size of SB.
Stage 1 tune > Comfort mode > Stage 3 red:
pressing the pedal down 1/4 of an inch feels like Sport + w/ the pedal half way down.
Torx 30 required to remove the pedal for installation.
Plug that goes to the pedal only attaches 1 way.
The other plug can go in both ways & w/ my luck I got it wrong the 1st try.
The controller will not light up & you get a ton or errors in iDrive !@#$%^
You will need a scan tool or ISTA-D (what I used) to clear the errors.
Installation & calibration video