Honestly I drove around in stock tune form for a short while before getting bored of it. I ended up buying tsp stage 1 and had that for a little while and loved it so much. I figured let’s get tsp stage 2 and really try to fry this clutch 😂 did not manage to fry my clutch before replacing it but I have to say this tune is a monster! Street racing is so fun with this tune because it’s such a big jump from stock so running once with a stock tune and then jumping to map 3 and really blowing the competition away by surprise. Love this tune!

Love the quality of the decals, and as always, TSP offers nothing but the best!

KTuner V2.0 Tuning Package w/ Free TSP Tune & 2 Day Shipping!

If you have anything with the 1.5t, you need KTuner. It completely transforms the car into something else. I can’t help but smile every time I go for a drive now.

Ran ktuner base maps for a couple of days and was pretty happy with the result. Was hesitant to flash their tune because the massive torque gain worried me but after a couple of emails with Corey, my insecurities went away. Car handles the tsp stage 1 tune beautifully. Even makes ktuners 23psi tune feel like stock. I’m happy with the tune but I’m even more happy with twosteps support staff. Two thumbs up!

Loving the new addition to my 19 Si Coupe!!!

Fast shipping, great product, very satisfied! Will be ordering more from TSP in the future. They are very helpful, and have great knowledge of their products.

Feels so good. Have to buy some new wheels so the tires stop spinning!

The cobra cold air filter by prl motor sports is truly an incredible work of art! I recommend every civic owner interested in adding performance to their vehicle to purchase this along with a TSP tune to truly make an unbeatable combo

Awesome product and super easy to install

The tracking was awesome. The tuner was packaged nicely. Overal pleased

What can I say I put the k tuner on locked it to my car loaded the tap stage 1 time to my laptop loaded onto k tuners app and now it’s on my car took about 40 mins uh my car is fast as shit now , I don’t wanna incriminate my self by saying how much fun I’ve had pushing it more now with ease still feels stock w reliability no cel’s no weird things happening its like new and normal just with added speed

I've been patiently waiting for this tune to come available for my ecu. Very satisfied!! Having never flashed a car's ecu before I was a little nervous but the step by step instructions paired with the Ktuner made it painless. I would highly recommend this to anybody that has the 1.5 turbo non-si.

After reading many threads on civicx and debating whether if I should tune I finally bought it and got a ktuner v2 and bought the stage 1 tune. This wakes up the car so much and makes it feel so much faster. My only regret was not flashing sooner! The different maps make it super convenient as well, whenever I'm stuck in traffic I can stay in map 1 and once I want to rip it I'll switch to map 3 for full performance. I have not seen a hit on my MPG as well, maybe a little less since I'm flooring it more. If you're concerned on reliability civicx has a great thread for people who tuned, people have reached 50k+ miles tuned with no issues.

I was a bit worried at first since I didn’t want to “damage” my car but i pulled the trigger and said I need a lil bit more power! And after having the tune for almost a year, I can say i still love it !

The Ktuner with the tsp stage 1 is my 1st upgrade to my 2020 Civic Si.. And I couldn't be happier with my purchase. Corey was very easy to deal with and very responsive to my emails.. I ordered my Ktuner on 1/16/2020 and got it in the mail the next day. I tired the Ktuner base tune for the 1st couple of days before I loaded the stage 1 and the Stage was felt more smoother over all.

Will definitely be purchasing from TwoStepPerformance again in the future

I went from having the Hondata +6 psi tune to KTuner 19/23 basemap to the TSP Stage 1. By far the best tune you can purchase for the 10th gen Si. Really wakes up the car. Also note that my car is stock besides a RMM. Highly Recommend this tune. You won’t regret it!

Purchased this for my 2020 Civic Si and all I can say is wow! First of all, fastest shipping I think I've ever had for a car part haha.. I've had experience with KTuner in the past on different applications, but with this particular car the KTuner REALLY wakes it up. My favorite part though is having a device to store tunes on (hint hint TSP Stage 1) and view real-time information, it's really nice to not need a laptop for everything!

Amazing quality and love the sound ! Shipping was fast also

This product is worth the money, it makes the Si feel much better. Love the features and live data readings. The product arrived very fast!

Worth every penny

Gives the car enough sound but not too much! The shipping was extremely fast as well!

This wheel is a vast improvement off of the stock si wheel. I feel like the car should have came with a flat bottom from the factory. All the finishes are really nice on this and the carbon fiber accents really set the interior off. I get compliments on the wheel all the time.

This tune is absolutely amazing! I switched from the ktuner 19/23 and it's a very noticeable difference. TSP customer service is fantastic and I am very happy with everything so far. Thank you :)

This is such an amazing product. Very easy to install just plug and play. Tune makes this car to a whole new level. Would definitely recommend it to anyone.

They shipped it the mext day after i ordered and it came within two days the customer service was incredible any questions i had about a tune or how to install they responded to me within a few hours

This is an awesome product. Just went on my second drive. Car is amazing on the TSP Stage 1 Tune which was included free and free overnight shipping is another bonus. Very happy with this product so far.

Love it!!!! A must add if you drive a civic si!!!

Best mod I ever bought for my si, and with tsp stage 1 tune wake up my car totally different animal.

This tuner is worth the money easy to set up, you can definitely feel the power difference, don’t need to hookup to any computer to set anything up really easy to install I enjoy this product and am looking forward to buying more products from you guys thanks!

So it was time to get a tuner. KTuner has really good reviews and user friendly. I had no issues using it. Pretty much the same price everywhere but, two step performance offers free next day delivery. That’s a huge plus, even better, the Si comes with a FREE Tsp stage 1 tune. Best of the best OTS right now. Why would you not buy from TSP.

My 10th gen si is the first car I modify, and I gotta say ktuner + tsp stage 1 tune is the best modification I have bought . Hauls so much butt!

Ktuner is easy to use and TSP 1 makes a ton of power. Awesome

Awesome quality and great customer service!

TSP went above and beyond with me on this order. Shipped extremely quickly and answered all of my questions extremely fast. Could not be happier with the service and the product.