ASA eSPEED B25.14/ B45.14 Instructions
For e-bikes with a Bosch drive unit
www.asa-autotechnik.de Page 4/ 18
4. Description
The ASA eSPEED B25.14 electronics cancels the speed limit of the motor assistance of
your Bosch e-bike without making concessions to the functionality of your HMI. The speed
you are currently driving will always be displayed regardless of whether the tuning is active
or deactivated. The motor assistance is not limited to 25 km/h, rather, any speed values
can be achieved. Also, no error codes will be generated for 2:1 gear ratios (error code
102). After the installation your e-bike will continue to function as previously accustomed,
but now the motor assistance will not be switched off as of 25 km/h (ASA eSPEED
B25.14) or 45 km/h (ASA eSPEED B45.14).
After installation, the electronics will automatically adjust to the different tyre sizes.
Calibration can be reactivated at any time by activating a special code so that its continued
use is possible in future Bosch e-bikes with other tyre sizes.
Installation occurs with original Bosch connectors and has been designed in such a way
that cable damage is prevented enabling the re-establishment of the original state at any
time.
Tuning is activated automatically in the sport and turbo modes and deactivated in the other
modes. It is not necessary to activate the light function; also the plug sockets in the motor
for the front and rear lights will not be used for our electronics.
The individual features of the electronics are in summary:
Microprocessor controlled micro-electronics
Installation without damaging the cables and thus the possibility of simply converting
back to the original
Cancellation of the 25 km/h limit in the sport and turbo modes
Full HMI functionality, in particular of the speedometer and the additional functions (km,
max. speed, average speed, etc.)
Self-calibration for different tyre sizes
No additional switches, cables, dongles, attachments, etc. necessary or visible
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