2017+ Civic Si

KTuner for 17+ Civic Si 1.5 Turbo

KTuner is for off-road research and development testing only. Every vehicle should be flashed back to factory before being driven on a public road.

What are my options?
KTunerFlash End User System – Hardware/software. Datalog And Make Your Own Changes! – $449

• KTunerFlash V2 End User System – All-In-One Display/Flash Hardware+Software. Datalog and make your own changes – $649

How do I get KTuner?
• Contact a dealer for dealer testing or to order a KTuner kit.

If you do not see your part number listed below, we can add it. Contact us via Info@KTuner.com

An asterisk next to an ECU number signifies that an appointment will need to be made in order to retrieve the ECU data. Part numbers for usable ECUs include:

North America Civic Si 1.5T
2017 MT 37820-5AM-A01 through A03
37820-5AM-C01 through C03

KTuner feature matrix for 17+ Civic Si (BETA means the feature is currently in testing phases):

Feature Final BETA End User Dealer Tuning Reflash
Real-Time Logging X X X
Ignition/Fuel Tuning X X X X
Rev Hang Disable X X X X
Throttle Padding Quick Adjustment X X X X
Throttle Control Quick Adjustment X X X X
Rev Limiter Settings X X X X
2-Step Settings X X X X
Full Throttle Shift Limiter X X X X
Dual Boost Targets For Normal And Sport Mode X X X X
Boost By Gear X X X X
Turbo Responsiveness Quick Adjustment X X X X
Turbo Ramp Quick Adjustment X X X X
Closed Loop Control X X X X
Disable Sensors X X X X
Fuel Cut Parameters X X X X
Fuel Correction Parameters X X X X
Ignition Correction Parameters X X X X
Idle Control Parameters X X X X

Speed Limiter removed. Please adhere to your tire speed limitations and note this feature is for off-road use only.

This package includes multiple starter maps, Factory, 19.5PSI, 21.5PSI, 23PSI, and 19.5/23PSI dual tune activated by the Sport button. Also included are quick adjustments that give you easy levels of control for throttle response, partial throttle boost response, and turbo ramp lag. Pick the combo of settings that’s right for your testing needs!

We are currently offering multiple research calibrations based on our 1.5T maps from the standard Civic with more to come in the future. All tunes should be run with 91+ octane for expected results.

Factory Starting Point:
Improved throttle response
Removed throttle dampening on low end, better performance off the line
Factory boost levels

Starter 19.5 PSI:
Improved throttle response
Removed throttle dampening on low end, better performance off the line
Reduced turbo lag
Improved low-end and midrange torque
Boost raised to 19.5psi after peak torque, whereas factory only targets 19 at the peak RPM of 5700 and then drops off again
Producing a much more sporty feel, better drivability, and additional top end power!

Starter 21.5PSI:
Improved throttle response
Removed throttle dampening on low end, better performance off the line
Reduced turbo lag with aggressive spool up
Improved low-end and midrange torque
Boost targets raised to 21.5psi
Producing a much more sporty feel, better drivability, and additional top end power!

Starter 23PSI:
Improved throttle response
Removed throttle dampening on low end, better performance off the line
Reduced turbo lag with aggressive spool up
Improved low-end and midrange torque
Boost peak raised to 23psi
Producing a much more sporty feel, better drivability, and additional top end power!

Starter 19.5/23PSI:
Improved throttle response
Removed throttle dampening on low end, better performance off the line
Reduced turbo lag with aggressive spool up
Improved low-end and midrange torque
Boost target 19.5psi in Normal Mode
Boost peak raised to 23psi in Sport Mode
Producing a much more sporty feel, better drivability, and additional top end power!

Flash Back To Stock At Any Time

Dyno Testing 23PSI:
Gains: 56tq, 35-40hp midrange, 30hp peak to peak. There’s more left in the top end, but we’re staying conservative. Custom tuning can take it to the next level.