How to engine swap a Honda Civic 6th gen DPFI

If you own a 6th-generation Honda Civic with DPFI (Dual Point Fuel Injection) and a 7-pin distributor, this guide is designed to help with the process of swapping the engine for a more powerful model. Let's explore different options and detail the components needed for each configuration.

Engine Choice and Components

For a swap with the D16Z6 engine, which is OBD1 and includes multipoint injectors, an alternator, and an OBD1 distributor, you’ll need to consider the compatibility of the peripherals. If you opt for an OBD2A or OBD2B engine, it is possible to use the peripherals from that engine.

Models with OBD2 DPFI Injection

• D14A3 (Civic EJ9)
• D14A4 (Civic EJ9)
• D15Z4 (Ballade / Civic 150i)
• D16Y4 (Civic EK1)
• D16Y9 (Ballade / Civic 160i)
• Other similar models

Option 1: Easy Setup

Required Components:

• Honduino OBD1 ECU
• OBD1 engine harness
• Adapter cables to connect the engine harness to the EK chassis wiring

Benefits:

• This is the simplest and most straightforward option for those who want to maximize the potential of an OBD1 engine without extensive wiring modifications.

Option 2: Budget Setup

Required Components:

• Honduino OBD2 DPFI ECU
• Original engine harness from the car.
• Original intake system (including injectors and 3-pin idle valve).
• DPFI distributor with 7 pins (secured with just one bolt).
• An additional connector to link the ECU to the VTEC solenoid.

Benefits:

• Lower cost since it uses the original wiring and existing components in the car.
• Ideal for those seeking an upgrade without spending too much on new parts.

Option 3: OEM Setup (Factory-Like)

Required Components:

• Honduino OBD2B ECU
• Engine harness from a D15Z6 (EK3) or B16A2 (EK4).
• Original OBD2 DPFI 190cc or OBD2 240cc injectors.
• Original OBD2 alternator.
• OBD2 10-pin distributor.

Benefits:

• Provides a finish and functionality close to the factory setup.

Final Considerations

Each of the options above offers advantages and challenges, depending on your budget, technical knowledge, and goals for the swap. Ensure all components are installed correctly and that the ECU is programmed for the chosen engine. With proper planning and attention to detail, the result will be a Civic with enhanced performance and reliability.