: Switching is typically triggered by a specific combination of factory controls, such as:
The tuner must physically copy the entire relevant map blocks into unused flash memory regions. These regions are typically found after the main code or in empty sectors. Common maps duplicated include:
The tuner repurposes an unused pin on the ECU connector — often pin 18 or 70 on the 121-pin EDC15P/EDC15V — for mode switching. You connect this pin to:
Most tuners in the early 2000s were happy with a single, aggressive "Stage 1" remap. But Elias had a problem: he wanted a fuel-sipping "Eco" mode for his 50-mile commute, a "Valet" mode to keep his brother from speeding, and a "Smoke" tune for the local drag strip. On an
Creating a multimap on an EDC15 involves: