Description
Upgrade the 2022-2025 Honda Civic Si (Sedan, Coupe & Hatchback) with the STILLEN TruControl Inline Power Module (TC103004). This innovative module seamlessly integrates into your Civic Si’s factory wiring harness and optimizes key engine parameters to increase boost pressure, unlocking significant gains in power and torque across the entire RPM range.
Installation is quick and effortless—up and running in just 15 minutes, with no special tools, soldering, or splicing required.
STILLEN also provides custom tuning files for use with our performance products, allowing you to fine-tune your Civic Si’s performance to match your driving style. The TruControl module is fully reversible, ensuring your factory warranty remains intact when removed for dealership service.
This module delivers the simplest and most cost-effective horsepower upgrade for your Civic Si, providing enhanced throttle response, acceleration, and driving excitement.
Vehicle Fitment
- 2022-2025 Honda Civic Si
- Sedan, Coupe, and Hatchback models
Features and Benefits
- +35 flywheel horsepower gain*
- +33 ft. lbs. torque gain at the wheels*
- Very easy installation – does not alter the factory ECU
- Bluetooth integration with free smartphone app
- No wiring or specialty tools required
- Easy removal and fully reversible to maintain factory warranty
- Over-the-air custom tuning files for Stillen aftermarket parts (exhaust, intake, etc.)
- 14 Day Satisfaction Guarantee – test it risk-free
- Not for sale in California
*Results may vary
Performance Numbers
- Stock Honda Civic Si: 200 flywheel HP
- With TruControl Inline Module: 209 WHP (+35 WHP) and 246 ft. lbs torque (+33 ft. lbs)*
Gains are most notable across the mid-range, delivering improved low-end responsiveness, acceleration, and overall driving performance.
Easy to Use
The TruControl module comes preloaded with up to 7 tuning maps, including Race Mode, Sport Mode, and Eco Mode. You can switch calibrations on-the-fly using the Tuning: Pro App, which also allows you to control and reset all calibrations based on your input.
