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No, Vtech is Honda's variable valve timing and lift system. The first Vtech systems came out in about 1992 and there are different versions of the system with different performance objectives. Vtech-E is designed to maximize fuel economy, where the vtech on a Si model is for performance. There are other systems which increase mid-range performance.

Turbo charging uses an exhaust gas driven pump to pressurize the air being supplied to the engine to increase performance.

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16y ago

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