SUZUKI 2006-2007 GSXR 600 / 750 WOODCRAFT RACING / SkutrNet SERVO BUDDY

Description

Suzuki 2006-07 GSXR 600 / 750
Woodcraft Racing / SkutrNet Servo Buddy
What is the Servo Buddy, and how does it work?
The Servo Buddy®, by SkutrNet, is a small electronic device that replaces the servo motor. By interfacing directly with the engine control unit the servobuddy can emulate a fully functional, stock, exhaust valve and motor system. By doing so the ECU has no idea anything is different from stock and will happily operate as intended without any FI lights or faults being triggered. This is important because if you have retuned your motor it ensures the correct fuel maps are being used and the bike does not go into any sort of “limp home mode”.
The factory motor unit really contains two components inside, the motor that spins the pulley, and a sensor that reports the motor position. The fuel injection system detects faults by monitoring the sensor feedback while sending signals to the motor. When a command is sent from the ECU to spin the motor in the direction that opens the exhaust valve, the sensor is monitored to make sure it spins in the correct direction, and stops in the correct place so that it can confirm the valve is fully open. The system operates similarly when closing the exhaust valve.
The ServoBuddy uses clever electronics to monitor the servo motor control lines, and output the correct sensor feedback to the ECU. The Servo Buddy is unique as it has been intelligently designed to so exactly replicate how the real motors work that the same circuit board can be used for almost every motorcycle manufacture on the market! The differences between models come down to the wiring schemes and connectors used. Additionally, the servo buddy has been carefully designed to be safe for your precious bike with diode protection, feedback protection, ESD protection, motor and sensor side isolation and a completely hardware implemented digital algorithm to make sure it is the most reliable option available. If you don’t understand what that all means, that’s ok. It basically means we’ve designed our circuit to be as safe as possible to your bike’s sensitive electronics, and be reliable for the life of your bike. Our components are automotive or military grade for durability and long life, the connectors are made to OEM specifications, and the wiring systems are automotive quality.
Why should I eliminate the exhaust servo motor?
The exhaust valve system is typically replaced for several reasons including the installation of an aftermarket exhaust that does not have the valve (most full systems and some slip-on exhausts), the valve or servo motor fails and needs to be replaced or removed, or the owner just wants a little more power.
Removing or bypassing the valve is quite easy. It can be accomplished as easily as removing the cables that connect the valve to the motor. The valve typically is spring loaded so if disconnected it will hold the valve in the full open position. Additionally, the purchase of a full or slip on exhaust system often eliminates the exhaust valve.
But now that the ex-up valve has been removed what do you do with the motor unit? The motor is connected to the ECU or engine control unit and as such the ECU will know when it is disconnected or not operating correctly. When this fault is detected a “code” will be thrown; usually this results in an FI light (fault indicator, or fuel injection system fault) being illuminated on the dash. The exhaust code varies by manufacture but general code descriptions can be found below:
Kawasaki ZX6R and Kawasaki ZX10R – Code 34 or 63
Yamaha R1 and Yamaha R6 – Code 17 or 18
Suzuki GSXR-600, Suzuki GSXR-750, and Suzuki GSXR-1000 – Code C46
Honda CBR600RR and CBR1000RR – Code 34 or 35
There are many more of course, but these are the most common.
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