The ACCURA Power Package is engineered specifically for the Honda Integra Type R (DC2 chassis), delivering a proven 60 horsepower increase for a total investment of $2,500. This comprehensive kit combines intake, exhaust, and tuning components to unlock the true potential of the legendary B18C5 engine. Whether you’re building a weekend track car or simply want more responsive daily driving, this package offers a straightforward path to significant gains without the complexity of forced induction.

What’s Included in the ACCURA Power Package?

Each component in the ACCURA Power Package has been selected and tested to work in harmony, eliminating guesswork and ensuring reliable performance. Here is a detailed breakdown of every part in the box.

High-Performance Intake Manifold

The stock intake manifold on the Integra Type R is restrictive at higher RPMs. The ACCURA unit features larger plenum volume and shorter, smoothly radiused runners. This design reduces flow restriction and improves cylinder filling, especially between 5,500 and 8,200 rpm. The manifold is CNC-machined from cast aluminum and accepts all factory sensors and vacuum lines for a direct bolt-on fit.

Upgraded Throttle Body

Working hand-in-hand with the intake manifold is a larger 68mm throttle body (stock is 62mm). The increased bore allows more air to enter the engine during wide-open throttle. The throttle plate is precision-machined for consistent idle quality, and the integrated idle air control valve uses the OEM connector. This upgrade alone can net 5–8 horsepower when combined with the manifold.

Performance Exhaust System

To let the engine breathe out as freely as it breathes in, the package includes a full stainless steel cat-back exhaust system. The piping diameter is increased to 2.75 inches (2.5 inch on stock), and the mandrel bends ensure minimal flow loss. A high-flow resonator and straight-through muffler reduce backpressure while delivering a deep, aggressive tone. The system is TIG-welded and comes with flanges for bolt-on installation.

High-Flow Fuel Injectors

With increased airflow, the stock 240cc injectors would quickly reach their duty cycle limit. The ACCURA kit includes four 310cc high-flow fuel injectors designed for the B18C5. These are plug-and-play with the factory harness and provide enough headroom for the additional 60 horsepower without running excessively rich. The injectors are flow-matched to within 1% for smooth idle and consistent fueling across all cylinders.

ECU Tuning Software & Map

The final piece is a custom ECU tune delivered via the Hondata S300 or MoTeC M84 (depending on your ECU version). You receive a pre-loaded calibration file that optimizes ignition timing, air/fuel ratio, and VTEC engagement for the new intake, exhaust, and injectors. The tune is designed for 93 octane fuel and includes safety features like knock control and fuel cut. For Integras with a stock ECU, the package includes a chipped or reflashed ECU, ready to plug in.

Installation Process

Installing the ACCURA Power Package requires intermediate mechanical skills and typical hand tools. A lift is helpful for the exhaust, but jack stands and a creeper work fine. Allow 4–6 hours for a first-time installation. Below is a step-by-step overview of the process.

  1. Disconnect the battery and drain the coolant to remove the intake manifold.
  2. Remove the stock intake manifold along with the throttle body and fuel rail. Label all vacuum hoses and electrical connectors.
  3. Install the new injectors into the fuel rail using new O-rings. Torque the rail bolts to 12 ft-lb.
  4. Mount the ACCURA intake manifold with a new gasket. Use a crisscross pattern to torque the nuts to 16 ft-lb.
  5. Attach the 68mm throttle body to the manifold, reconnecting the throttle cable, TPS sensor, and IACV.
  6. Replace the exhaust system by removing the stock cat-back at the catalytic converter flange. Install the new system with supplied gaskets, tightening the clamps after aligning the tips.
  7. Install the tuned ECU or upload the calibration via OBD1 or OBD2 connector. If using a reflashed ECU, simply plug it into the factory harness.
  8. Reconnect the battery, refill coolant, and perform a leak check. Start the engine and allow it to idle for 10 minutes while monitoring for codes.

If you are not comfortable with ECU tuning or internal engine modifications, ACCURA strongly recommends professional installation. Many independent Honda performance shops can complete the job in 3–4 hours, with labor costs typically ranging from $400 to $700.

Performance Gains and Dyno Results

The 60 horsepower increase is not a marketing estimate—it is measured on a Dynojet dynamometer under SAE correction. A stock 1997 Acura Integra Type R (B18C5) puts down approximately 170–175 whp. After the ACCURA Power Package, the same car produces 230–235 whp. The gains are spread across the entire powerband, but the largest increase occurs between 5,800 and 8,200 rpm where the VTEC lobe engages.

Key performance metrics achieved by test vehicles:

  • Peak horsepower gain: +60 hp (165 hp to 225 hp at the crank, approximately)
  • Peak torque gain: +35 lb-ft, with a flatter curve starting at 4,000 rpm
  • 0–60 mph: Reduced from 6.3 seconds to 5.2 seconds
  • Quarter-mile trap speed: Improved from 97 mph to 104 mph
  • Maximum RPM: Increased from 8,400 to 8,600 with revised VTEC crossover

For reference, these numbers are competitive with modern hot hatches and provide a thrilling driving experience without sacrificing daily drivability. The power delivery remains linear, and the engine feels responsive from 3,000 rpm all the way to redline.

ECU Tuning: The Brains of the Operation

The factory ECU on the Integra Type R is calibrated for stock components and conservative emissions. Simply bolting on performance parts without adjusting fuel and timing will yield limited gains and could cause lean conditions or knock. The ACCURA tuning solution addresses this by providing a custom calibration that takes full advantage of the hardware.

Hondata S300 Option

For OBD1 Integras (1994–1995), the package includes a Hondata S300 ECU system. The S300 allows real-time data logging, adjustable launch control, and rev limit. The pre-loaded map has been refined over dozens of dyno sessions to maximize mid-range torque while maintaining safe air/fuel ratios around 12.5:1. You can also fine-tune the map later if you add other modifications.

Reflashed ECU Option

For OBD2 models (1996–2001), a reflashed factory ECU is provided. This is a simple “plug and play” solution—no tuning software required. The calibration is locked to prevent accidental changes, but it still includes all the necessary adjustments for 60+ horsepower. Note that OBD2 readiness can be affected; check local emissions laws before installation.

Real-World Driving Experience

Owners who have installed the ACCURA Power Package consistently report a transformation in how the car drives. The most noticeable change is the increase in mid-range torque—the engine no longer falls flat below 5,500 rpm. You can accelerate briskly from 3,500 rpm without downshifting, making highway merging and passing much easier. When VTEC engages at 5,800 rpm, the surge is audible and visceral, but it doesn’t feel abrupt.

The exhaust note becomes more aggressive under load but remains comfortable during cruising. The intake produces a distinctive induction growl above 6,000 rpm. Overall, the package retains the character of the Type R while adding a level of performance that makes the car feel like a newer, more powerful platform.

For track use, the 60 horsepower gain reduces lap times significantly, especially on circuits with long straights like Willow Springs Raceway or Laguna Seca where top-end power matters. The enhanced throttle response also helps with corner exit speed.

Important Considerations Before Buying

While the ACCURA Power Package is designed for a straightforward install, several factors should be evaluated before making a purchase.

Vehicle Condition

The kit assumes your engine is healthy—compression within spec, no vacuum leaks, and the timing belt in good condition. Perform a compression test and inspect the coolant for signs of head gasket failure. If your Integra has high mileage (over 150,000 miles) without a rebuild, consider refreshing the valvetrain seals and spark plugs during installation.

Model Year Compatibility

The kit is engineered for the 1997–2001 Acura Integra Type R (DC2) with the B18C5 engine. It is not compatible with the GS-R or LS trims because of differences in intake port shape, exhaust routing, and ECU pinouts. If you own a JDM Integra Type R (DC2) with the B18C engine, confirm that your OBD version matches the included ECU (JDM typically uses OBD2A but may vary).

Emissions and Street Legality

In many U.S. states, removing the catalytic converter or modifying the ECU calibration can affect emissions compliance. The ACCURA package retains the factory catalytic converter flange, so you can reuse your stock cat with a simple adapter. However, the tuned ECU will not pass an OBD2 plug-in test in states like California; you would need to swap back to the stock ECU for inspection. Check local regulations before installation.

Warranty Considerations

If your Integra is still under a third-party warranty (rare for this generation), the performance modifications may void coverage. Most aftermarket components are not covered by Honda warranties. Ensure you are comfortable bearing the cost of any future repairs related to the powertrain.

Alternative Upgrades and Future Expansion

For those seeking even more power, the ACCURA Power Package serves as an excellent foundation. The intake manifold, throttle body, injectors, and ECU tune are all sized to support a mild cam upgrade or a ported cylinder head. Some owners later add a cold air intake (the kit works with most CAI systems) or a 3-inch exhaust for additional gains. A larger diameter header and test pipe can push output past 250 whp while maintaining the same ECU calibration.

If you are on a tighter budget, ACCURA also offers a “Stage 1” kit that includes only the intake manifold, throttle body, and basic tune for $1,500, yielding about 35 horsepower. However, the full package at $2,500 is the best value per horsepower.

Conclusion

The ACCURA Power Package is a well-engineered, complete solution for Integra Type R owners who want a substantial 60 horsepower increase without the complexity of supercharging or custom fabrication. Every part from the intake manifold to the ECU calibration has been tested together to produce reliable, repeatable gains. With a total investment of $2,500 and a weekend of work, you can transform your B18C5 into a 225+ horsepower beast that retains daily drivability and the iconic VTEC character. Consider your vehicle’s condition and local laws, but for most enthusiasts, this kit represents one of the most effective bolt-on upgrades available for the DC2 Type R.