The Copperhead® ECU is a plug and play replacement (not a piggyback solution) for the stock ECU in the Yamaha Grizzly 550. It controls the timing and fuel, and our high energy and repetitive fire ignition allows for crisper throttle response, reduced fuel consumption, while giving substantial power gains.
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The Copperhead® ECU provides a typical 6% 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.
Learn why a replacement ECU is superior to an piggy back fuel controller:
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|Compatible Machine Manufacturer||Yamaha|
|Compatible Machine Year||2009|
|Compatible Machine Year||2011|
|Compatible Machine Year||2010|
|Compatible Engine Size||550|
|Compatible Fuel Delivery||Fuel Injected|
|Dimensions (LxWxH)||145mm x 115mm x 42mm (without wiring harness)|
|Programming Connector||DB9 male (proprietary connection)|
|Input Voltage||9-15V (Minimum 11V required to start engine)|
|Input Current||0.9A RMS @ 25C|
|Output Voltage||+/- 170V|
|Output Energy||14.5 mJ|
|Firing Duration||15 degrees via multi-spark|
|Operating Temperature||-55C to +100C|
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