KTuner V1.2 Tuning Package w/ Free TSP Tune & 2 Day Shipping!

$449.00

SELECT YOUR VEHICLE

KTuner V1.2 Tuning Package w/ Free TSP Tune & 2 Day Shipping! - Two Step Performance

How to install it in 15 mins?

1. Plug Into the OBD-II Port: 

Locate your car’s OBD-II port (usually under the dashboard) and connect the K-Tuner device.

2. Connect to Your Computer: 

Use the USB cable to link K-Tuner to your computer, then open the K-Tuner software.

3. Upload the Tuning Map: 

Choose your desired tuning map (factory, sport, or custom) and upload it to the K-Tuner device.

4. Activate and Enjoy: 

Once the upload is complete, start your car and experience the enhanced performance instantly! It's that easy – no tools or expertise required!

does it fit my car?

K-Tuner V1.2 supports various Acura and Honda models, including popular ones like Accord, Civic, ILX, CR-V, and S2000. For a complete list of supported models, click the button below.

SEE THE FULL LIST

Free 2-Day Shipping

Please note, the FREE 2-Day Shipping offer is for orders in the lower 48 states only. Any orders outside of this specified territory may be required to pay for additional shipping costs and customs duties/fee where applicable.

what’s included?

- The KTunerFlash V1.2 tuning package comes with a single KTunerFlash V1.2 hardware unit paired with a single user license for the KTuner Software.

- Includes our famous TSP Stage 1 map for Si or Non-Si! - The tune will automatically be included if you specify an eligible vehicle (2016+ Civic with 1.5L turbocharged engine) before adding to cart. -

**All standard KTuner base maps are also included regardless of your selection.

10,000+ Happy Customers

KTUNER V1.2 TUNING PACKAGE W/ TSP TUNE

FEEL THE ADRENALINE AS YOU'RE GLUED TO YOUR SEAT!

Accelerate faster, instantly
Driving feels exciting again
Install it in 15 minutes
Engine-safe, reversible changes
MPG boost unlocked
Control your driving style

Accelerate faster,

instantly

Driving feels exciting again

Install it in 15 minutes

Engine-safe, reversible tuning

MPG boost unlocked

Control your driving style

Do you have a 2025 Honda Civic Si?

No (No KCD)

Yes (KTuner Connectivity Kit)

Do you have a 2025 Honda Civic Si?

No (No KCD)

Yes (KTuner Connectivity Kit)

FREE 2-DAY SHIPPING

60-DAYS RETURN

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REVIEWS

INSTALLATION

BENEFITS

FAQ

REVIEWS

INSTALLATION

BENEFITS

FAQ

faster acceleration

Instant throttle

Safe tuning

Easy installation

Performance data

Quick overtakes

Reversible changes

Smoother shifting

Fuel efficiency

Safe tuning

Easy installation

Performance data

Quick overtakes

Reversible changes

Fuel efficiency

Smoother shifting

Instant throttle

faster acceleration

WHAT DRIVERS ARE SAYING

Title

4.86/5

Based on 492 Reviews

Ktuner beast!

This company is legit. I originally bought a 70a rmm and that was amazing. I wanted that first to handle the tuner I bought at TSP. This car is a beast now with the tsp 1+ tune. Car is very fast with this tune. Its incredible. No joke. This tune is dangerous!!! Excellent upgrade on my 2020 civic si coupe. Hats off, TSP!!!!!!

Matty T

VERIFIED BUYER

THERE'S A HUGE DIFFERENCE!

In sport mode I can feel the power!!

Ice Burg

VERIFIED BUYER

Woke up my Civic!

Finally pulled the trigger after about a year of research and planning. Customer support was excellent and Savannah responded in about 30 seconds with everything I needed to finish loading my tube.

Was unknowingly in map 1 and thought, meh, this doesn’t seem worth it, but then I met map 3, and WOW!! I’m fully stock, but this really woke up the engine and makes for a very lively drive! Awesome addition!

Scott Mosher

VERIFIED BUYER

THIS THING IS aMAZING !!

Thanks tsp for the tune. Really makes my touring feel alive.

Jose

VERIFIED BUYER

I highly recommend!

Bought the v1 with the TSP Stage 1 tune and I only have one complaint... now I gotta upgrade my brakes! Thanks a lot guys!!! All jokes aside i struggled to get going and TSP was there with fast responses to get me where I wanted to be. I highly recommend these guys they know what they're doing and they set the customer service bar high.

Mikey

VERIFIED BUYER

Absolutely worth the money!

Even though there isn't alot to tune on the fit it's still a great buy. Just wish it had a way to recalibrate the speedometer readout for smaller tires.

Chris M.

VERIFIED BUYER

SELECT YOUR VEHICLE

60-Day Money-Back

Over 10k Happy Customers

Install K-Tuner in 15 mins

It's that easy – no special tools or expert knowledge needed!

Plug Into the OBD-II Port

Locate your car’s OBD-II port (usually under the dashboard) and connect the K-Tuner device.

Connect to Your Computer

Use the USB cable to link K-Tuner to your Windows computer, then open the K-Tuner software.

Upload the tuning map

Choose your desired tuning map (factory, sport, or custom) and upload it to the K-Tuner device.

Drive and

enjoy

Once the upload is complete, start your car and experience the enhanced performance instantly!

SELECT YOUR VEHICLE

60-Day Money-Back

Over 10k Happy Customers

Feel the power the moment

you punch it!

Dominate the Road with Instant Speed

Feel the adrenaline as your car accelerates faster and shifts gears smoother for a thrilling drive every time.

More Power, Less Fuel Wasted

Crush the road with optimized fuel efficiency - save on gas without losing the performance you crave.

Switch Modes, Feel the Difference

Instantly toggle between sport, economy, or custom driving modes and experience adrenaline-packed control tailored to your style.

Safe Tuning, Reversible Settings

Boost performance without risk. Restore factory settings anytime. Enjoy full control with safe, engine-friendly tuning you can trust.

SELECT YOUR VEHICLE

60-Day Money-Back

Over 10k Happy Customers

REAL PERFORMANCE BOOST
REAL DIFFERENCE

These numbers are based on tests performed on a 2017 Honda Civic 1.5T

+30%

More Horsepower

+36%

More Torque

+17%

Quicker to 0-60 mph

+50%

Faster Throttle Response

+9%

Better Fuel Efficiency

+30%

More Horsepower

+36%

More Torque

+17%

Quicker to 0-60 mph

+50%

Faster Throttle Response

+9%

Better Fuel Efficiency

METRIC

AFTER K-TUNER

BEFORE K-TUNER

IMPROVEMENT

HORSEPOWER (HP)

237

HP

182 HP

Torque (lb-ft)

281

lb-ft

206 lb-ft

0-60 mph Acceleration

6 seconds

7.2 seconds

Fuel Efficiency (Eco Mode)

Fuel Efficiency

30.4

mpg

27.7 mpg

Throttle Response

50% faster

Standard

*NOTE: Results may vary depending on the vehicle model, engine setup, and tuning preferences.

SELECT YOUR VEHICLE

60-Day Money-Back

Over 10k Happy Customers

WHAT OUR CUSTOMERS

ARE SAYING

Highly recommend this!

Ktuner arrived on time and as described. The Stage 1 tune came same day as well. Plugged in, loaded the tune and flashed. My car is breathing so much better and the power delivery is there. Highly recommend this for your 10th gen.

Ken Her

VERIFIED BUYER

What a difference 475$ makes

I was hesitant about putting a tune on my new Si. But after reading and researching, I was led here, and I wish I would of done it the first week. All you have to do is follow the instructions Will be back for the PRL Stuff next.

Drew C.

VERIFIED BUYER

Won't be disappointed

I have both the 10th gen Si and 11th gen EX. The 11th gen civic does not have a great place to put a V2 Ktuner, so decided to be stealthy and purchase the V1.2. I have been running the TSP 1+ on my SI for 10k miles, and it's been the best investment I could have ask for. Hence I went with TSP for the EX tune as well, just loaded it last night, and did a few quick pulls, but going from 13psi to 22psi. Really woke the car up, I can't wait to put more miles on the car, as I am confident in TSP and Derek Robinson, for their ability to make a safe but powerful tune.

Arthur B.

VERIFIED BUYER

the best investment i ever did to my car!

super easy to install the Ktuner don't even think about getting it just get it this mod made a huge difference in my honda accord sport 2016. the free map that it came with is a game changer they put time and effort into the free map the throttle response is insane compared to the factory ECU. I am telling you just get it this is no joke when I hit the freeway my car is a monster the 4banger feels like a v6 on steroids. is so much fun to drive now it keeps up with muscle cars they look at me like whaat lol

elias andujar

VERIFIED BUYER

So much fun love it !

Got the ktuner with tsp tune for civic hatchback sport and woke the car right up feels like a different car! So much fun love it!

Steve Joss

VERIFIED BUYER

KTuner is a MUST HAVE!

If you are debating whether to order the KTuner or not, DO IT!! This thing is absolutely amazing. It definitely wakes up the car and has performed beyond my expectations of it. Highly recommend to anyone with an 11th gen or earlier civic si.

Riley P.

VERIFIED BUYER

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60-Day Money-Back

Over 10k Happy Customers

Tired of Feeling Left Behind?

You’ve been there - watching others fly past, their cars roaring with power, while your ride just can’t keep up. The frustration builds every time someone talks about their latest upgrade or leaves you in the dust at a meet.

One Upgrade, Endless Respect

Then it happened. You installed the K-Tuner. That first pull was electrifying - smoother shifts, instant throttle response, and pure adrenaline. Suddenly, your car wasn’t just a way to get around. It was a statement.

Welcome to the Brotherhood

Now, you’re part of it. The nods at meets, the envy from friends, and the shared stories of late-night runs. It’s not just about speed - it’s about being part of a community that lives for the love of driving.

THE GEARHEAD'S
DREAM SETUP

SELECT YOUR VEHICLE

60-Day Money-Back

Over 10k Happy Customers

Fast & Free Shipping

Free shipping on all orders over $249 to the continental US. Most orders delivered within 1-3 days!

60-Day Returns

Two Step Performance offers 60-day returns! Your satisfaction is our top priority.

Flexible Payments

Financing options are available. Rates as low as 0% for qualifying customers!

Unbeatable Support

Reach out to our support team and allow us to assist with any of your needs.

FREQUENTLY ASKED QUESTIONS

How does the KTunerFlash V1.2 improve my vehicle's performance?

The KTunerFlash V1.2 allows you to optimize your vehicle’s ECU for improved power, torque, fuel efficiency, and responsiveness. With custom tuning options and pre-loaded maps, you can fine-tune your car to match your driving style and performance needs.

Will using the KTunerFlash V1.2 void my vehicle's warranty?

The KTunerFlash V1.2 is designed to be easily reversible. If needed, you can restore your vehicle's factory settings, minimizing any risk to your warranty. We recommend checking with your dealership for specific policies.

Is the KTunerFlash V1.2 safe to use on my vehicle?

Yes, the KTunerFlash V1.2 is designed with safety in mind, offering reliable and stable tuning solutions. It allows you to revert back to your factory settings at any time if needed. However, we recommend following the tuning instructions carefully and consulting with a professional tuner for custom maps to ensure optimal performance.

How long does it take to install and set up the KTunerFlash V1.2?

The installation process is quick and straightforward, taking approximately 15 minutes. Simply connect to your vehicle's OBD2 port, follow the instructions, and you're ready to go.

What vehicles are compatible with the KTunerFlash V1.2 Tuning Package?

The KTunerFlash V1.2 Tuning Package is compatible with a wide range of Honda and Acura models. For a full list of compatible vehicles, please refer to the KTuner compatibility chart on our website or contact our customer support team for assistance.

Do I need any special tools or equipment to use the KTunerFlash V1.2?

No special tools are required. The KTunerFlash V1.2 connects directly to your vehicle's OBD2 port, allowing you to flash and monitor your ECU using the provided software. All you need is a laptop with Windows to install the KTuner software and manage your tuning.

Can I switch between performance maps on the go?

KTunerFlash V1.2 allows you to store multiple performance maps and switch between them using your laptop.

Do I need internet access to use the KTunerFlash V1.2?

No, you do not need internet access for the device to function. Once the software is installed on your laptop and the maps are loaded, the KTunerFlash V1.2 works independently.

Can I sell or transfer the KTunerFlash V1.2 to another vehicle?

Yes, but the device is locked to one ECU at a time. You can revert your current vehicle back to factory settings and unlock the KTunerFlash V1.2 for use on another compatible vehicle.

What happens if I encounter issues during setup or tuning?

Our dedicated support team is here to help. Whether you need troubleshooting assistance or guidance during setup, contact us, and we'll ensure you're back on track.

60+Day Money-Back

Over 10k Happy Customers

SELECT YOUR VEHICLE

60-Day Money-Back

Over 10k Happy Customers

Reversible changes

Quick overtakes

Performance data

Easy installation

Safe tuning

Fuel efficiency

Smoother shifting

Instant throttle

faster acceleration

Reversible changes

Quick overtakes

Performance data

Easy installation

Safe tuning

Fuel efficiency

Smoother shifting

Instant throttle

faster acceleration

Lightning fast shipping

Very happy with the purchase.

It arrived at my house in less than 3 days, even though I live in Spain.

No surprises, no extra charges, no customs fees or duties—nothing.
The price on the website is the final price. Fast shipping and spectacular customer service.

Highly recommended website!.

Ktuner

Easy ordering and fast shipping. I have not had a chance to install but will this weekend.

Excellent, as expected

Easy install, great results, great customer service. Thank you TSP and thank you KTuner!

Amazing device

Both the Ktuner hardware and software are both fantastic. I was able to tweak more individual things than i expected and the dual 21 tune that comes with it is pretty good about waking up the car (1.5T non-si in my case).

The TSP Stage 1 that also came free with the purchase is also great with awesome power and great fun, but at the cost of a bit jerkier driving at low gears at lower speeds.

I did however get sent the wrong file at first but the Ktuner software didn't let me flash it to my ECU and let me know why which was great.
Thankfully i got the correct file within minutes of pointing it out.

1 2 3

SELECT YOUR VEHICLE

60-Day Money-Back

Over 10k Happy Customers

KTuner V1.2 Tuning Package w/ Free TSP Tune & 2 Day Shipping!

THE GEARHEAD'S
DREAM SETUP

Customer Reviews

Let customers speak for us

KTuner V1.2 Tuning Package w/ Free TSP Tune & 2 Day Shipping!

THE GEARHEAD'S DREAM SETUP

Customer Reviews

Let customers speak for us

THE GEARHEAD'S
DREAM SETUP