The Elite 550 is an entry-level ECU offering basic features; it features a robust, environmentally sealed, waterproof case, along with 4 fuel and ignition channels. 

Features: 
• Waterproof Case  (IP67 - only with waterproof USB Cable or USB Cap fitted)  
NOTE: Waterproof USB Cable (HT-070002) and Waterproof USB Cap (HT-070004) are sold separately.    
• Waterproof Case (IP67) (with USB Cover Fitted) 
• 34 Position AMP connector 
• 4 x Fuel Injection Outputs (Peak And Hold (0-8A Peak / 0-2A Hold)) 
• 4 x Ignition Outputs  
• 2 x Engine Position Inputs with extensive trigger type support  
• 1 x Digital Pulsed Inputs (Digital inputs supported only) 
• 5 x Digital Pulsed Outputs 
• 2 x Analogue Voltage Inputs 
• 1 x Throttle Position Input  
• 1 x Coolant Temperature Input  
• 1 x Air Temperature Input 
• 1 x   CAN Bus communication for Haltech CAN Expansion 
 • Internal 3Bar Map Sensor rated up to 200kPa of Boost (2bar/29psi) 
 • ESP Calibration Software – Intuitive and easy to use 
 • User definable tables
• Closed Loop O2 Control
 • ECU comes fully enabled, no additional charges for advanced features. 
 • Sequential, semi sequential, batch or multipoint injection patterns 
 • Distributor ignition systems, multi-coil systems or Haltech Multiplex CDI systems 
 • Load sensing by: 
        • Throttle Position (TPS),  
        • Manifold Absolute Pressure (MAP) or  
        • Mass Air Flow (MAF) 
• 4 x Fuel Injection Outputs (Peak And Hold (0-8A Peak / 0-2A Hold)) 
• 4 x Ignition Outputs 
• 2 x Engine Position Inputs with extensive trigger type support  
• 1 x Digital Pulsed Inputs (Digital inputs only supported) 
• 5 x Digital Pulsed Outputs 
• 2 x Analogue Voltage Inputs 
• 1 x Throttle Position Input  
• 1 x Coolant Temperature Input  
• 1 x Air Temperature Input 
• 1 x Internal 3Bar Map Sensor rated up to 200kPa of Boost (2bar/29psi)  
 
• 1 x   
CAN Bus communication for Haltech CAN Expansion  
Technical Specifications: 
Input Supply Voltage : 8VDC to 16VDC 
Output Sensor Supply Maximum Current Ratings: 
Dimensions : 
Dimensions: 127mm (L) X 127mm (W) X 39mm (H) 
                     5.0″ (L) X 5.0″ (W) X 1.54″ (H) 
Weight: 350g (0.771lb)