An engine is a finely tuned instrument. There are umpteen number of design variables to play with – valve size, Bore and Stroke, design of intake and exhaust manifolds, materials used, to name a few. The Inline 4 format is the most popular one on cars. Also, it is used widely on Superbikes.
More and more two wheeler companies are looking into fuel injection as an option in their bikes simply because it is the new tech that has come up. But don’t get us wrong, fuel injection has been in the picture since the 1980s.