KTuner V1.2 – 2016–2021 Honda Civic 1.5 Turbo ECU Tuning System

Unlock the Performance of Your Honda Civic 1.5T

Your Honda Civic 1.5 Turbo has more performance potential than its factory ECU calibration delivers.

The KTuner V1.2 Flash Tuning System allows you to optimize turbo boost, ignition timing, fuel delivery, and throttle response directly through your factory ECU.

Whether you drive a stock Honda Civic EX, EX-T, EX-L, Touring, or Sport equipped with the 1.5L turbo engine, KTuner provides the tools to improve engine performance and customize your driving experience.

No ECU removal. No aftermarket ECU. No complicated wiring.

Simply connect through your factory OBD-II port and take control of your Civic's performance.

🚀 Performance Benefits

• Increased Horsepower & Torque – Optimize turbo boost, ignition timing, and fueling.

• Faster Turbo Response – Improve boost delivery and reduce turbo lag.

• Sharper Throttle Response – Reduce factory throttle dampening.

• Stronger Midrange Acceleration – Improve torque delivery throughout the powerband.

• Adjustable Boost Pressure – Customize boost targets for your engine setup.

• Rev Hang Disable – Improve shifting response on supported manual-transmission models.

• Custom ECU Tuning – Support compatible performance modifications.

• Real-Time Datalogging – Monitor engine parameters and evaluate calibration performance.

KTuner V1.2 transforms the way your Honda Civic responds to driver input while retaining the factory ECU.

KTuner V1.2 Starter Calibrations

KTuner includes starter calibrations for supported 2016–2021 Honda Civic 1.5T models.

Stage 0 and Stage 1 are described by KTuner as compatible with 87-octane fuel, although 91+ octane is recommended for best results. Higher-boost calibrations should be evaluated for the vehicle's fuel, engine condition, and transmission limits.

Vehicle Compatibility – 2016–2021 Honda Civic 1.5 Turbo

KTuner V1.2 supports compatible 10th-generation Honda Civic 1.5L turbocharged engines with manual (MT) and continuously variable (CVT) transmissions.

Compatible Honda Civic Models

Important: Model and trim compatibility is a general guide for US-market vehicles. Final compatibility depends on the installed ECU part number and software codebase. Certain trims and transmission combinations vary by model year.

Honda Civic Si, Type R, and naturally aspirated 2.0L models require their respective KTuner applications and are not covered by this specific compatibility listing.

Compatible Honda ECU Part Numbers

KTuner V1.2 supports the following US-market Honda Civic 1.5 Turbo ECU part numbers.

Manual Transmission (MT) ECU Compatibility

These ECU families are listed by KTuner for compatible 2016–2021 US-market Civic 1.5T manual-transmission applications.

CVT ECU Compatibility

How to Read the ECU Table

For example, ECU family 37820-5AA with suffix A51–A59 includes part numbers 37820-5AA-A51 through 37820-5AA-A59.

International Honda Civic 1.5T models: KTuner also supports numerous international ECU part numbers. Contact Kugan Tuning with your complete ECU part number to confirm compatibility.

Some ECU codebases have limited advanced tuning features. Confirm compatibility before purchasing if you require specific functions such as boost-by-gear or on-the-fly map switching.

Advanced KTuner V1.2 Features

Engine Management

• Ignition timing adjustments

• Fuel tuning adjustments

• Flex-fuel ignition, fueling, and boost control

• Rev limiter settings

• Fuel correction parameters

• Ignition correction parameters

• Idle control adjustments

Turbocharger & Boost Control

• Adjustable boost targets

• Boost-by-gear on supported ECUs

• Turbo spool adjustments

• Turbo ramp adjustments

• Turbo responsiveness adjustments

• Dual ECO/Normal boost targets

Performance Features

• Throttle response adjustments

• Rev hang disable for manual transmissions

• 2-step limiter settings

• Full-throttle shift limiter for supported manual applications

• Anti-lag settings for supported manual applications

• On-the-fly map switching

• Three selectable tuning levels on supported ECUs

Monitoring & Diagnostics

• Real-time ECU datalogging

• Engine operating parameter monitoring

• Calibration analysis

• Factory calibration restoration

Feature availability varies by ECU part number and codebase.

Simple OBD-II ECU Flashing

KTuner V1.2 is designed to program supported Honda Civic ECUs through the factory diagnostic connector.

Installation Process

1. Download and install the KTuner software on a compatible Windows computer.

2. Connect the KTuner V1.2 hardware to your Civic's OBD-II diagnostic port.

3. Connect the device to your computer using USB.

4. Complete device registration and ECU setup.

5. Select a supported calibration.

6. Follow the KTuner instructions to program your ECU.

7. Verify engine operation and review datalogs.

No ECU removal or soldering is required for supported applications.

Maintain stable vehicle battery voltage during programming.

Works With Stock and Modified Civic 1.5T Engines

KTuner V1.2 can support a wide range of engine configurations, including:

• Stock Honda Civic 1.5T engines

• Aftermarket cold-air intakes

• Upgraded intercoolers

• Performance exhaust systems

• Upgraded turbochargers

• Compatible flex-fuel systems

• Custom performance builds

Modified configurations may require professional tuning rather than an included starter calibration.

Why Buy KTuner V1.2 From Kugan Tuning?

Kugan Tuning specializes in Honda and Acura ECU programming, performance calibration, and remote tuning.

Our experience with Honda engine management allows us to help customers choose the appropriate tuning hardware and understand their calibration options.

We can assist with:

• KTuner V1.2 hardware selection

• ECU compatibility verification

• Honda Civic 1.5T performance modifications

• Datalogging and troubleshooting

• Professional remote tuning services

• Custom ECU calibration for supported modifications

Need a custom tune for your modified Civic?

Kugan Tuning offers professional tuning services for customers who need more than the included KTuner starter calibrations.

Custom tuning is sold separately unless specifically included with your order.

Frequently Asked Questions

Will KTuner V1.2 work on my 2016–2021 Civic?

KTuner V1.2 supports compatible 1.5L turbocharged Civic models with supported ECU part numbers. Check the ECU compatibility tables above before ordering.

Does KTuner V1.2 work with CVT transmissions?

Yes. KTuner supports compatible CVT-equipped Honda Civic 1.5T models. Conservative torque management is important for CVT reliability.

Does KTuner V1.2 increase horsepower?

Compatible performance calibrations can increase horsepower and torque by adjusting boost, fueling, and ignition timing. Actual results vary.

Can I flash my Civic back to stock?

Yes. KTuner supports restoring the factory ECU calibration.

Can I use KTuner V1.2 with an upgraded turbo?

Yes, on supported configurations. An upgraded turbocharger generally requires custom tuning.

Does KTuner V1.2 support flex fuel?

Yes, flex-fuel tuning is available on supported ECU codebases with appropriate hardware and calibration.

Do I need to remove my ECU?

No. Supported applications can be flashed through the factory OBD-II port.

Unlock Your Honda Civic 1.5T Performance

The KTuner V1.2 Flash Tuning System gives you the tools to optimize engine performance, improve turbo response, and customize your Honda Civic's ECU calibration.

Whether you're running a stock 1.5T or building a modified setup, KTuner V1.2 provides a flexible tuning platform that can grow with your performance goals.

Order your KTuner V1.2 from Kugan Tuning and take control of your Honda Civic's performance.

KTuner is intended for off-road research and development testing only. Restore factory calibration before operating on public roads and comply with applicable emissions regulations.