Optimization of Exhaust Emissions on FI Motorcycle using Programmable ECU and Ethanol Mixture with Taguchi MethodWawan Purwanto, M. Sadly Firmansyah, Muhammad Fajar, Akmal Gunawan, Ahmad Arif, Toto Sugiarto and Dwi Sudarno PutraE3S Web Conf., 622 (2025) 01015DOI: https://doi.org/10.1051/e3sconf/202562201015