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VTEC - Variable Timing and Lift Electronic Control VTEC requires the ability to understand the state of the environment and motor in order to change the valve timing. Various sensors from oxygen, engine rpm, barometric pressure, engine temperature, air temperature, oil pressure, throttle position effect the the various timing events of a VTEC engine. ...
Yes you will need a compatible ECU for your new engine. The ECU reads multiple signals from your engine and will change your camshafts timing accordingly. When your engine gets high rpm, your valve timings should be adapted to get the VTEC boost.
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