What Mods Increase Horsepower For Dodge Challenger?
The Dodge Challenger is built with power in its DNA, but for many Mopar enthusiasts, stock just isn’t enough. Whether you’re driving a 5.7L HEMI, a 6.4L Scat Pack, or a supercharged Hellcat, there’s always room to unlock more horsepower. At KOW Performance, we help Challenger owners turn up the power with tried-and-true performance mods that deliver real gains on the street and at the track. If you're ready to get more out of your Challenger, here are the top mods that increase horsepower.
1. Cold Air Intake (CAI)
A cold air intake is one of the simplest ways to free up horsepower. It pulls cooler, denser air into the engine, which improves combustion and efficiency. Most CAIs offer a gain of 5–15 horsepower depending on your setup. Combine it with a tune and other bolt-ons, and you’ll start to feel a noticeable difference in throttle response and mid-range pull.
2. Performance Exhaust System
An upgraded exhaust system reduces backpressure and allows your engine to exhale more freely. A cat-back system enhances sound and power, while long tube headers and high-flow cats take things a step further. On HEMI-powered Challengers, you can expect a 15–30 HP gain when combined with proper tuning.
3. ECU Tuning
Tuning your Challenger’s ECU is one of the most impactful upgrades you can make. By optimizing ignition timing, fuel curves, and throttle mapping, a performance tune unlocks horsepower and torque gains that you can feel instantly. Depending on your engine and mods, tuning can add 20–50+ HP. KOW Performance offers custom tuning solutions for all Challenger trims, including remote tuning options for convenience.
4. Throttle Body Upgrade
Upgrading to a larger throttle body improves airflow and throttle response, especially on 6.4L and Hellcat engines. This mod works best when paired with a CAI and custom tune. Gains are modest on their own but contribute to a more responsive and aggressive driving experience.
5. Forced Induction
If you’re chasing serious horsepower, forced induction is the way to go. Supercharger kits are available for naturally aspirated Challengers and can add 150–300+ HP depending on the build. Turbo kits are less common but equally effective when installed properly. These setups require supporting mods like upgraded fuel systems, cooling systems, and forged internals—but the results are unbeatable.
6. Camshaft and Valve Train Upgrades
For naturally aspirated builds, installing a performance camshaft and valve train upgrades can add significant power, particularly in the upper RPM range. This is a more advanced modification that requires tuning and professional installation, but it’s ideal for Scat Pack and 5.7L builds looking to stay all-motor.
7. Drivetrain and Efficiency Mods
Reducing parasitic loss can also increase performance. Lightweight pulleys, a one-piece driveshaft, and upgraded differential components help get more power to the wheels. While these don’t technically increase engine horsepower, they improve acceleration and drivetrain response.
Conclusion
Whether you're after modest gains or a full-blown performance build, the Dodge Challenger has a ton of potential waiting to be unlocked. At KOW Performance, we build custom horsepower packages tailored to your driving goals, budget, and build stage. Contact us today to talk performance and take your Challenger to the next level.