SKU: 7876531740

Stillen TruControl Inline Power Module for 2017-2020 Honda Civic Si (TC103002)

Sale price$292.05 Regular price$324.50
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Description

Stillen TruControl Inline Power Module for 2017-2020 Honda Civic Si (TC103002)2017 2020 Honda Civic Si TruControl by STILLEN Inline Power Module TC103002 Now with 14 Day Satisfaction Guarantee Test it in your own vehicle completely risk free. Custom files available when purchasing other Stillen performance products. Elevate your 2017 2020 Honda Civic Si with the TruControl by STILLEN Inline Power Module! STILLEN is thrilled to introduce this innovative enhancement, meticulously designed to effortlessly enhance your Honda

2017-2020 Honda Civic Si TruControl by STILLEN Inline Power Module - TC103002

Now with 14 Day Satisfaction Guarantee - Test it in your own vehicle completely risk free. Custom files available when purchasing other Stillen performance products.

Elevate your 2017-2020 Honda Civic Si with the TruControl by STILLEN Inline Power Module! STILLEN is thrilled to introduce this innovative enhancement, meticulously designed to effortlessly enhance your Honda Civic's performance. By seamlessly integrating the Power Module into the factory wiring harness and optimizing crucial parameters, we unleash increased boost pressure, delivering significant power and torque gains across the entire power band. And the best part You'll be up and running in just 15 minutes without the need for any special tools, splicing, or soldering.

But that's not all we also provide tailor-made tuning files for Stillen performance products. With our expert tuning options, you can fine-tune your Honda Civic Si's performance to align perfectly with your individual driving preferences.

Here's even more good news - the TruControl by STILLEN Inline Power Module won't impact your factory warranty! As long as you remove the product before visiting the dealership for service, your warranty remains fully intact. So, you can relish the advantages of enhanced power and performance without any concerns. The TruControl by STILLEN Inline Power Module represents your opportunity for the most straightforward and cost-effective horsepower upgrade available for your Civic. Embrace the transformation and unlock your car's true potential today!


Features and Benefits:

  • +35 flywheel Horsepower gain*
  • +33 ft. lbs. Torque gain at the wheels*
  • Fits Sedan, Coupe, & Hatchback models
  • Very easy installation; Does not alter the factory ECU
  • Bluetooth integration
  • Free app with smartphone integration
  • No wiring or specialty tools required
  • Easy removal and reversible to maintain factory warranty
  • Over-the-air Custom Tuning file for Stillen aftermarket parts (exhaust, intake, etc)
  • Not for sale in California

*Results may vary

The Numbers

From the factory the Honda Civic Si is rated at 205 flywheel horsepower. In stock condition, our dyno measured 174.5 HP at the wheels. After installing our TruControl by STILLEN Inline Power Module the dyno reported back a maximum wheel numbers of 209 horsepower(+35 whp) and torque exceeding 246 foot pounds(+33 wtq). Making the wheel horsepower greater than the factory flywheel horsepower*.


*Results may vary

Easy to Use

With the engine on or with the key on, you can go through and [-/+] select which calibration you want to run at any point in time. You can use the Tuning: Pro App which also controls and resets all calibrations based on what you input in the application.


The TruControl by STILLEN Inline Power Module comes preloaded with up to 7 different maps for your Honda Civic Si. These maps are going to range anywhere from Race mode to Sport mode to Eco mode.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7876531740

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Tony Abbott
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★★★★★ 5
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Size: 5 Quarts
I have used Castrol GTX/edge for 40 years, works well, never wanted to change, good price.
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Reviewed in the United States on April 30, 2026
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Edmond Ilunga Kaninda
Whiting, US
★★★★★ 5
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Size: 5 Quarts, Size: 5 Quarts
This is the best oil that I ever used.I have used it in my Toyota Noah 2006-2007 model…The engine is as quiet as new…wanted to see how it would perform.It has clocked 3,500km.This is good and have recommended to my friends and family
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Reviewed in the United States on May 23, 2026
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Dawn S.
Dallas, US
★★★★★ 5
Top-tier engine protection that runs quiet and smooth
Size: 5 Quarts
I’ve used Castrol EDGE in a couple of our vehicles and always come back to it for consistent performance. It extends the time between oil changes and holds up well under both daily driving and highway mileage. We don't "extend the time" though. It's changed, on the dot, every time. The consistency and quality of the oil's condition at change, though, is easily able to be seen that it would go for much longer. Engine runs quieter, and I’ve noticed better fuel efficiency over time compared to conventional oil. Whether that's how attentively I drive and watch the mileage meter on the dash or the oil - is up for debate ;) It doesn’t burn off as quickly either, which is great if you’re keeping an eye on long-term engine health. The bottle design pours cleanly with a smart spout, which saves unnecessary messes in the garage. Pros: Strong wear protection and long-lasting Improves engine quietness Easy-pour design Tip: Use it with a high-quality oil filter for maximum benefit don’t skimp on either part and you'll be golden.
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Reviewed in the United States on June 26, 2025
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Eric C.
Lowell, US
★★★★★ 5
Excellent choice for long oil change intervals.
Size: 1 Quart, Pack of 6
I'm a former dealership mechanic and for years I used whatever we had in the bulk tank which was usually Valvoline conventional. My last job was at a German car dealership. Castrol was the oil recommended by the German manufacturers and that's when I started using Castrol. In my experience Castrol is an excellent oil. My 2014 Ford just rolled over 242,000 miles and even with factory 10,000 mile oil change intervals, from what I can see through the oil fill the top end of the engine is still clean. I've never had to remove the valve cover. It's using about a quart between oil 10,000 mile oil changes which is great because when it was new it used about a 1/2 quart between changes.
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Reviewed in the United States on January 28, 2026
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Doraiky
Louisville, US
★★★★★ 5
Bueno
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