as i said know your "ENGINE BUILD" and rev it up where it is giving power.

Revving your engine to redline at neutral is an out of the world idea (vtec will not engage, waste of fuel, damage, et al) and vtec3 engine is not a powerful engine as compared to b16 or b18c5, it is not a race tune engine, and neither it will sustain power right up to the end of the redline.

again if you want to have a reliable high revving engine that can live at redline or a high revving engine (8k rpm or 11krpm)that will still deliver power- tune it up, upgrade, build it properly, know your honda engine. i never find such a good honda engine to start building other than JDM b16 and the mighty b18c5. Although these engines are in existence since 80's they are still the widely used engines by tuners.

A properly build and properly tune engine will give you a license to live beyond stock redline of 8000 rpm, you can climb as far as 11k rpm with no fears and worry. That's full VTEC power!

Remember honda is making power by revving high and VTEC live at high RPM, its a factory design to be there (no vtec at low rpm). Dont make your honda VTEC a mere paper design, engage it even for a while by hitting 5500 RPM or 6000 RPM (depending on your ecu) and when your ECU senses all element for VTEC to engage, live it up!