Custom tools, such as the MED9.1 Multimap Tool by EliasTuning , patch the ECU code to change the vkKraQu value based on user inputs rather than just reading it from the EEPROM at startup.
: Users can set up to 4 different tunes, such as: Anti-theft (no start/immobilized). Full Power (performance tune). Low Power (valet mode or fuel economy). Performance with Extras (e.g., pops and bangs/crackle map). Key Requirements & Compatibility med91 multimap
Limitations and risks
: Optimized for specific octanes (e.g., 95 vs. 98/100 octane). Fueling & Trims Custom tools, such as the MED9