The TODA Racing Sports Injection Kit 17100-B16-458 is a premium Individual Throttle Body (ITB) intake system designed for naturally aspirated Honda B-Series VTEC engines.
It replaces the factory single throttle body and intake manifold with four individual 45 mm throttle bodies, dramatically improving throttle response, induction sound, and high-RPM airflow.
**Specifications
- Compatible engines:
- Honda B16A
- Honda B16B
- Honda B18C Type R
- Throttle body diameter: 45 mm
- Trumpet length: 88 mm (the “-458” suffix identifies the 88 mm trumpet version)
- Fuel rail: Designed to work with the standard B16 injector spacing
- Injectors: Not included (uses compatible injectors separately)
Main Advantages
- Extremely sharp throttle response thanks to one throttle per cylinder.
- Higher airflow than the factory intake manifold.
- Increased horsepower at high RPM while also improving mid-range torque when properly tuned.
- Equal-length intake runners improve cylinder filling consistency.
- Produces the classic high-pitched Honda ITB induction sound.
Required Supporting Modifications
To achieve the best performance, this kit generally requires:
- Standalone ECU (such as MoTeC, Haltech, Link, or Hondata with suitable conversion)
- Professional dyno tuning
- High-flow fuel system if targeting high power
- Performance camshafts (optional but highly recommended)
- Free-flow exhaust header and exhaust system
- Velocity stacks or an airbox/filter setup
Important: This kit does not work with the factory ECU and requires aftermarket engine management.
45 mm vs. 50 mm Version
TODA recommends:
- 45 mm throttle bodies for most street and track-day cars, offering excellent drivability and strong mid-range.
- 50 mm throttle bodies for highly modified or race-oriented B18C-R engines operating at very high RPM.
Ideal Applications
- Honda Civic EG6
- Honda Civic EK9 Type R
- Honda Integra DC2 Type R
- Honda CR-X EF8 SiR
Estimated Performance
On a well-built naturally aspirated B16B or B18C-R with aggressive cams, high compression, proper exhaust, and a quality tune, this ITB system can provide:
- Noticeably faster throttle response.
- Stronger mid-to-high RPM power delivery.
- Peak power gains typically in the 10–20 hp range compared with a quality single-throttle intake setup, depending on the overall engine build and calibration.
For enthusiasts building a high-revving naturally aspirated Honda, the TODA Racing 17100-B16-458 is considered one of the benchmark ITB systems, combining OEM-level machining quality with excellent drivability and race-proven performance.
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