The cylinder head intake and exhaust ports and intake and exhaust manifolds are form optimized for far better volumetric performance. Mitsubishi decreased the friction in the engine by including elastic grinding with the valve stems, adopting a high-efficiency shroud Outfitted plastic impeller from the water pump and working with 0W-20 https://dominickzfgtj.webbuzzfeed.com/31921828/an-unbiased-view-of-mivec-4b12-engine