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To give it considerably more punch, Mr. Allen applied age-old engine modifications, including increasing the engine’s compression ratio and its displacement.

To achieve this, Nissan said it strengthened in-cylinder gas flow and ignition, which burns a more diluted air-fuel mixture at a high compression ratio.

The fuel system works in synergy with a range of variables, including ignition timing, supercharger boost, compression ratio, clutch application rate and more.

The power bump is thanks in part to a redesigned exhaust manifold and new pistons designed to increase the engine’s compression ratio.

It’s a turbocharged four-cylinder with a variable compression ratio.