“A Comparative Analysis of Standard (Limiter) and Racing (Unlimited) CDI Systems on Performance and Fuel Consumption in Four-Stroke Motorcycles”. TOFEDU: The Future of Education Journal 5, no. 3 (September 10, 2026): 5125–5132. Accessed October 9, 2026. https://journal.tofedu.or.id/index.php/journal/article/view/2286.