When does the VTEC kick in?
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Instructor
Joined: Jan 2004
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From: MA
When does the VTEC kick in?
WooHoo, my 100th post! 
Anyways, I feel a little embarrased to ask, but at what rpm does the VTEC kick in? I've had my car up to about 5k in 3rd gear, but wasn't sure if I should expect some additional power band at a particular rpm.
Anyways, I feel a little embarrased to ask, but at what rpm does the VTEC kick in? I've had my car up to about 5k in 3rd gear, but wasn't sure if I should expect some additional power band at a particular rpm.
Instructor
Joined: Dec 2003
Posts: 229
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From: Kansas City
From Acura's web-site...
At low rpm, the VTEC™ intake valves follow a set of low-lift, short-duration cam lobes with timing that optimizes the flow of air and fuel into the cylinder. As the engine accelerates, the intake rocker arms transition to actuation by high-lift, long-duration cam lobes designed to optimize high-rpm output. VTEC™ delivers substantially more horsepower from 5000 rpm, and provides a considerable torque increase both at low and high engine speeds.
At low rpm, the VTEC™ intake valves follow a set of low-lift, short-duration cam lobes with timing that optimizes the flow of air and fuel into the cylinder. As the engine accelerates, the intake rocker arms transition to actuation by high-lift, long-duration cam lobes designed to optimize high-rpm output. VTEC™ delivers substantially more horsepower from 5000 rpm, and provides a considerable torque increase both at low and high engine speeds.
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