Honda L15B7 Engine Swap: The Ultimate Legal Performance Upgrade for Project Cars
The Honda L15B7 engine swap represents a significant advancement in engine swap technology, combining increased performance with modern efficiency. This 1.5-liter turbocharged engine delivers superior power while maintaining excellent fuel economy and lower emissions compared to traditional B-series and K-series swaps.
White Honda Civic with red accents
Key Advantages of L15B7 Swap:
- Over 235 horsepower at the flywheel
- More than 215 ft-lb of torque to the wheels
- Advanced turbocharging and direct injection
- Variable cam timing on both intake and exhaust
- BAR-certified potential for legal compliance
- Improved fuel efficiency over previous swap options
Honda engine bay
Compatible Vehicles:
- Honda Fit (all three generations)
- 1992-1995 Civic
- 1996-2000 Civic
- 1994-2001 Integra
- 2015 Honda CR-Z (proven successful)
Required Components:
- L15B7 engine (2017-2021 Civic Si)
- Engine harness
- ECU
- Electronic pedal assembly
- EVAP system from donor vehicle
- Conversion harness (available through JDI)
- Engine mounts (available through Hasport)
Honda Civic Si 1.5L turbo engine
Performance Benefits:
- Doubled power output in most applications
- Enhanced torque delivery
- Improved throttle response
- Modern engine management capabilities
- Flex fuel compatibility potential (+40hp with E85)
Civic SI dyno: 91-gas vs E85
Honda CR-Z power graph on 91-octane
L15B7 engine torque on 91 octane
The L15B7 swap represents the next evolution in Honda engine swaps, offering a perfect balance of performance, efficiency, and modern technology. With proper planning and the right components, this swap can be both legal and highly effective for various Honda platforms.
Hondata Flash Pro device
White Honda CR-Z parked outside
DSPORT magazine subscription gift card