2006-2010 Suzuki King Quad 450 Copperhead® ECU

The Copperhead® ECU is a plug and play replacement (not a piggyback solution) for the stock ECU in the King Quad 450 EFI.  It provides a typical 9-14% power increase from idle to red-line (WOT), and a part throttle power increase of up to 25% over stock. In addition, the top speed limiter has been increased. The ECU also allows for the fuel to be adjusted for aftermarket camshafts and pipes (requires optional programmer interface). Comes complete with the Copperhead® ECU and a machine specific adapter harness containing the EFI specific electronics and mating connectors for that model.

Features:

• Repetitive fire ignition delivers hotter spark with longer spark duration for maximum power and virtually eliminates misfires, while giving you easy starts and crisp throttle response. Preloaded performance map allows the machine to run cooler, produce more horsepower and more torque, while minimizing fuel consumption.
• Shipped with machine specific harness that plugs directly into factory wiring harness. Toggle switch on the unit allows user to switch between two preloaded setups.
• Default preloaded map keeps factory limiters (reverse / speed) and similar power when the toggle switch is in position #1. When the toggle switch is in position #2, all limiters are disabled, and the timing is optimized for maximum power on 87 octane fuel. Setups and maps can be changed and optimized for different fuel grades via our programming interfaces (sold separately).

Learn why a replacement ECU is superior to an piggy back fuel controller:     

ECU VS FUEL CONTROLLER WHITE PAPER

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Manual

COPPERHEAD ECU INSTALLATION INSTRUCTIONS

Specifications

COPPERHEAD ECU SPECIFICATION SHEET