is a specialized form of ECU software calibration that enables a vehicle to store more than one calibration map simultaneously. Unlike a traditional "one-shot" tune, a multimap tune allows the driver to switch between different power profiles without needing a laptop or reflashing the ECU. Typically, this switching is done via:
Can be enabled on a per-map basis (e.g., enable on map 2, disable on map 1). med91 multimap
: Deliberately retards ignition timing and adjusts fueling during deceleration to keep the turbocharger spinning under closed throttle conditions. is a specialized form of ECU software calibration