Quote:
Originally Posted by DOFZO
Yes. Under ~2500rpm vtec is NOT engaged, the engine is running using 12 valves.
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so at idle its 12v? i disagree. when you accelerate from idle and dont let it get into L/B and you rev past 2500 rpms does the motor gain a sudden increase in power? no it doesn't. then this means vtec it always engaged from idle on and only disengages for L/B.
i dont know how test the 02 sensor to confirm this though. how would you do this? just a volt meter?
[/QUOTE] Engaging vtec just engages one additional valve per cylinder for a total of 16 valves.[/QUOTE]
correct.