Christopher T. Estopin, Jake A. Algo, Jonathan O. Manas, Christia C. Baltar. (2023). Expanded Elbow Pipes and Mufflers: Its Effects on Fuel Consumption of Four Cycle Motorcycle Engine. Mathematical Statistician and Engineering Applications, 71(4), 10941–10962. https://doi.org/10.17762/msea.v71i4.2036