Hondata FlashPro Civic Si 2017-2020 Turbo 1.5 US

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The FlashPro allows full user tuning and datalogging for your Civic Si 1.5 Turbo. It includes Windows based software called FlashProManager. The FlashPro connects from your laptop's USB port to your vehicles diagnostic port to provide live tuning with a variety of calibrations, extensive real time and stored datalogging capabilities. 


Within the USA this product is legal only for racing vehicles which may never be used upon a public highway.

Sales Market

This FlashPro can only be sold to US/Canada addresses.


The Hondata FlashPro is a hardware and software combination that connects from your laptop's USB port to your Civic's diagnostic port. It enables you to tune your engine computer for:

  • Hondata Sport Mode
  • Intakes
  • Exhausts
  • Higher octane fuel
  • Higher Boost levels

The FlashPro Manager software comes with several built in calibrations. You will find a base map that is a great fit for your car.

The FlashPro has the best datalogging capability and support in the industry. There is simply no better way to learn how your engine runs and responds than by connecting a FlashPro and datalogging. See for yourself.

The Hondata FlashPro is a product that delivers all the features you need, now, fully working, that will grow with you as you upgrade your engine. With live tuning capabilities, your tuner can now tune your car faster and more accurately.

The FlashPro is designed, manufactured and assembled in the USA. As a result of local assembly, extensive testing before shipping and our stringent quality control, the FlashPro is incredibly reliable.

Sales Region US/Canada Only
EPA/CARB status (USA) Competition vehicles only
Model Civic
Year 2017-2020
Market US
Trim Si
Engine L15B7
Transmission MT
Part Number 5AM-(A02-A04) US
5AM-(C02-C04) Canada
5AM-(K02-K04) South America


FlashPro Manager software's advanced datalogging and live tuning capabilities combined with thoroughly tested base maps allow your car to be tuned faster and more accurately than any other solution on the market. You will love the way your engine's response is improved.

Introducing Hondata Sport Mode

Introducing the Hondata Sport mode;  a revolutionary enhancement. In addition to Honda's suspension, steering and throttle improvements the Hondata Sport mode adds 27 hp and 40 lb-ft torque to make the best use of the Civic Si's sport mode improvements. 

Hondata's full throttle shift is the quickest way through the gears. Just dip the clutch and change gear with your right foot pegged to the floor. Hondata's full throttle shift algorithm cuts the engine power until the clutch is released. Eliminate your boost lag, improve your 0-60 and 1/4 mile times all while having a ton more fun.

FlashPro features

2017+ Software editing


Hondata is the world leader in tuning Honda engines and have many world records to prove this. Every map listed here has been comprehensively tuned for fuel, ignition and boost.

Listed here are dyno plots of several of the many base maps provided with the FlashPro. 

How the FlashPro will perform on a stock Civic Si ? The answer is superbly!

With a 100% stock  Civic Si Turbo you will benefit from:


  •  27 HP and 40 lb-ft torque
  • Improved turbo spool
  • Raised boost limits
  • Better throttle response
  • Better mid range power and torque
  • Removed speed limit
  • No change in part throttle fuel economy
  • World class datalogging - which will teach you a lot about your engine.

Base map:


  • Dotted green line stock Si. 205 hp 235 lb-ft torque.
  • Solid green line Hondata +6 psi reflash. 233 hp 258 lb-ft torque


+ 9 PSI calibration

The supplied  +9 psi calibration (light blue line) is capable of generating 272 lb-ft torque.  In our dyno testing we found the stock clutch beginning to slip. The Dynapack dyno is very hard on the drivetrain and is more likely  to cause slip than street driving with stock tires. Our road testing to date has shown no clutch slip with the + 9 psi calibration. We recommend using the +6 psi calibration and an upgraded clutch.

Mitsubishi Turbo Si calibration

Stock cat, intake and exhaust. 93 octane.

Clutch recommended

  • Dashed green line stock Si. 205 hp 235 lb-ft torque.
  • Dotted red line Mitsubishi turbo. 250 hp 275 lb-ft torque