Two Step Performance

TSP Stage 1 Tune for 2017+ Honda Civic Si


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  • $79.99
  • Regular price $99.99

Customer Reviews

Based on 120 reviews

bought this 2 yrs ago love it well worth it...

Tsp stage 1

Awesome products, feels more refined than the base maps. Can't wait to try out the tsp 1+

TSP stage 1 tune

I’m full bolt ons and adding this tune was an insane wake up for my car. Definitely night and day difference, couldn’t be happier with it !

Night and Day difference

The difference on the throttle response is amazing. It really wakes up this little 1.5L engine.

Great product

Woke up my car. Best tune I’ve had thus far

2017 civic si TSP Stage 1

I had at least 5-10k miles on tsp stage 1 as I have now moved on to stage 2, but I would highly recommend tsp stage 1 to anyone looking for a good entry tune. its reliable and caused no issues. the map functionality is neat but I always left mine on map 3, and you could really zip around with it, the worst that will happen is maybe your clutch will start to slip but I didn't really have that happen to me and I abused my car on map 3. i would highly recommend getting this tune with an intake for sounds, either the 27won cai or the prl cobra cai both work,

Join the over 3000 10th Gen Civic Si owners that have elevated their Si to another level with our Stage 1 Tune!

Two Step Performance has partnered with Derek Robinson to offer a high quality tune for the 2017+ Civic Si that offers an additional 55 whp and 76 ft lbs of torque in comparison to the factory ECU calibration. Full details are as follows:

182whp / 206tq - Factory Calibration
208whp / 258tq - KTuner Starter 23psi
237whp / 281tq - TSP Stage 1 Tune

All testing was completed on a stock 2017 Civic Si running 93 octane fuel. Tune features include:

  • Numerous fuel, ignition, turbo response, throttle response changes.
  • WOT shifting enabled. (Set to 5000RPM)
  • Adjustable launch control enabled.
  • "Rev hang" disabled (the end user can enable "rev hang", if desired)
  • All disables / monitors are able to be adjusted by the end user.
  • Quick Boost By Gear is able to be adjusted by the end user.
  • On-the-fly boost map switching active for normal and "Sport" modes. (see below)
  • Throttle Responsiveness & Throttle Padding Settings are allowed to be adjusted by the end user so that the overall feel can be aggressive or more toned down, as desired.

Map 1: Factory boost levels and turbocharger response.
Map 2: 19psi normal, 21psi "Sport" mode, Improved Turbocharger Response II
Map 3: 19psi normal, custom boost level "Sport" mode, Improved Turbocharger Response II

Factory boost level in "Map 1" allows for easy "valet" mode when the KTuner unit is unplugged from the car!

Premium fuel (91 or 93 octane) is REQUIRED.

Suitable for use with the factory intake or a QUALITY aftermarket intake that keep fuel trims in check such as the PRL Motorsports Cobra. Aftermarket downpipes are also fine. Mods such as this are expected to add power that is not accounted for in our dyno testing.

In addition to standard sized intakes, the PRL Race MAF Cobra & Short Ram intakes as well as the 27Won Race MAF intake are supported. Please select the appropriate option for your intake when ordering. Need to make a change later down the road? Take advantage of our File Conversion Service.

*Tune orders placed during business hours are typically fulfilled via email the same day. Orders outside of business hours are filled the following business day. FlashPro tune orders may be slightly delayed due to the process required to build your custom file.*

Please verify that your ECU is supported via our TSP Tune Compatibility List prior to purchase.

This tune is for the 2017+ Civic Si only. Please be sure you are purchasing the correct tune for your vehicle because digitally delivered items are non-refundable. (If you buy this for your 2016 Civic LX, it won't work, and we cannot offer a refund.)

Click here for our installation guide.