Honda’s Variable Valve Timing & Lift Electronic Control (VTEC ^® ) system provides power where and when you need it.

VTEC is the “replacement for displacement.”

• Outstanding performance without the inferior low rpm fuel efficiency of larger displacement competitors.
• Broader, flatter torque curve
• Smooth power delivery throughout the engine’s operating range.

How does VTEC work?

VTEC varies the lift and duration of the intake valves to deliver optimal performance at both low and high rpm, resulting in peak performance at all speeds.

VTEC uses two cam lobe profiles to operate the intake valves.

• The low-lift, short duration cam lobes (shown in red) provide strong torque at low rpm.
• At higher rpm, a synchronizing piston engages the third rocker arm on a high-lift cam (in blue). All three rocker arms are locked together. The intake valves are open for a longer period of time to produce more power.
• This results in a superior combination of power, torque and fuel efficiency.

Boosted Low Speed Torque, or BLAST, uses Honda’s patented spark advance system to propel the boat to plane in just seconds.

When you move the throttle quickly, BLAST is activated:

• The throttle body opens up
• The air-fuel ratio goes to a richer setting
• The ignition timing advances aggressively

This allows the engine to make more torque, or power.

“Hole Shot” is vastly improved, as more horsepower gets the hull up on plane quicker.

Introducing Honda Marine’s new iST Intelligent Shift & Throttle

• Control of up to 4 engines and 2 control stations
• Effortless shift and throttle control
• Fine tuning of throttle settings at any speed
• Enhanced docking and slow speed control
• User-programmable system defaults
• Simple, easy to understand user interface

Multi-Engine Applications

Simple Installation

• Plug and play, requires no programming or special tools to install
• Stylish modern binnacle control box
• Compact, under the cowl design
• Up to four engine installations
• Near effortless shifting under all conditions
• Intelligent engine RPM synchronization with one handle throttle control
• Master trim control on throttle handle, individual trim controls on head unit
• for dual engines, and auxiliary panel for triple and quads
• "Slow"" mode for increased throttle control while maneuvering at slow speeds, such as around the dock or a crowded marina
• "Trolling"" mode for incremental RPM adjustments at any speed
• Easy helm control transfer up to two stations