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The 2024+ Mustang S650 represents the pinnacle of Ford’s internal combustion pony car legacy. With the Gen 4 Coyote V8 under the hood, the platform is more capable than ever. However, leaving your S650 in stock configuration is leaving performance on the table. Factory settings are designed for the masses; performance modifications are designed for the enthusiast.
At DTX Performance, we focus on high-performance outcomes. If you want to transform your S650 from a showroom cruiser into a street-shredding machine, you need a plan. Precision engineering and strategic upgrades are the keys to unlocking the true potential of the Coyote engine.
Here are the five essential performance mods every S650 owner should prioritize.
1. Push Airflow: Cold Air Intakes
The Gen 4 Coyote features a unique dual-intake setup. To maximize power, you must optimize how this engine breathes. High-performance cold air intakes from industry leaders like Steeda and Airaid are engineered to reduce restriction and lower intake air temperatures.
A quality intake system does more than just look good under the hood. It increases the volume of oxygen-rich air reaching the cylinders, resulting in immediate throttle response improvements and measurable horsepower gains.
The Carbon Trap Secret
Before you even bolt on a new part, expert owners know about the "Carbon Trap Delete." The factory air boxes contain charcoal filters designed for emissions regulations. Removing these is a "free mod" that can free up approximately 10 horsepower. Combine this with a high-flow intake system, and you have the foundation for a high-performance build.
Shop with Confidence: When selecting an intake, look for systems that maintain a sealed box design to ensure you aren't drawing in hot engine bay air.
2. Unleash the Sound: Performance Exhaust
The S650’s factory exhaust is competent, but it lacks the aggressive growl and flow efficiency required for serious performance. Upgrading your exhaust system is the most visceral modification you can make.
Select Your Tone: Borla vs. Corsa
For the S650, two names dominate the conversation: Borla and Corsa.
- Borla: Known for their patented straight-through technology, Borla offers the ATAK (most aggressive) and S-Type (balanced) systems. Their systems are designed to eliminate drone while providing a deep, muscular tone that defines the Modern Muscle persona.
- Corsa: If you want a high-pitched, exotic scream at high RPMs, Corsa is the answer. Their Reflective Sound Cancellation (RSC) technology ensures a dead-silent cabin during highway cruising, with a ferocious bark the moment you wide-open throttle.
Whether you choose an Axle-Back or a full Cat-Back system, increasing the diameter and improving the flow of your exhaust path reduces backpressure, allowing the Gen 4 Coyote to rev more freely.
3. Command the Road: Lowering Springs
Horsepower is useless if you can’t put it to the ground or maintain control through a corner. The S650 sits notoriously high from the factory, creating a gap that hurts both aesthetics and aerodynamics.
Steeda Lowering Springs are the industry standard for the Mustang platform. By lowering the center of gravity, you significantly reduce body roll, nose dive under hard braking, and "squat" during hard acceleration.
Precision Handling
A set of performance springs doesn’t just "lower" the car; it recalibrates the suspension geometry for better mechanical grip. If your S650 is equipped with the MagneRide suspension, ensure you select springs specifically engineered to work with the active damping system. This maintains your drive mode functionality while providing a sleek, aggressive stance.
4. Select Your Stance: Performance Wheels
Unsprung weight is the enemy of performance. Every pound you remove from the rotating mass of your Mustang translates to faster acceleration and more responsive steering. Upgrading to a set of lightweight, high-strength wheels is a critical step in any S650 build.
Forgestar and Weld Performance
Forgestar wheels are a favorite for the S650 due to their rotary forged construction, offering custom offsets that allow for a perfectly flush fitment. For those looking for a more drag-oriented or classic muscle look, the Weld S71 series provides unmatched strength and a professional aesthetic.
If you are building a street/strip machine, selecting the right wheel specifications is vital. Consider these high-performance options for your setup:
- For a dedicated drag setup, the Weld S71 17x6.5 provides a lightweight front-runner option.
- For balanced street performance, the Weld S71 17x8.5 with a 4.7in backspace or the Weld S71 17x8.5 with a 5.2in backspace are excellent choices to maintain clearance while providing a wide contact patch.
- Wider options like the Weld S71 17x9.5 allow for massive rear tires to maximize traction.
Upgrading your wheels isn't just about style: it's about selecting a tool that helps the car perform at its peak.
5. Refine the Logic: ECU Tuning
The brain of your S650 is the ECU. From the factory, Ford tunes the Mustang to operate in all environments, on various fuel qualities, and within strict emissions limits. Performance tuning rewrites the software to prioritize power and efficiency.
Unlocking the Gen 4 Coyote
Tuning the S650 is a game-changer. For owners using 93-octane fuel, a custom tune can yield 22–25 additional horsepower. For those with access to E85, the gains are even more dramatic, often reaching 35–40 horsepower.
Beyond peak numbers, a tune transforms the driving experience:
- Improved Shift Quality: For 10-speed automatic owners, a tune optimizes shift points and pressure, making the car feel much more responsive.
- Removed Speed Limiters: Allow your Mustang to run to its true physical limits.
- Throttle Mapping: Eliminate the factory lag between your foot and the engine.
Tuning is the "glue" that brings all your other modifications together. It ensures your intake and exhaust upgrades are working in perfect harmony with the engine's timing and fueling requirements.
Build Your Legacy
The S650 Mustang is a blank canvas. By focusing on these five essential areas: Intake, Exhaust, Suspension, Wheels, and Tuning: you create a balanced, high-performance machine that stands out from the crowd.
At DTX Performance, we don't just sell parts; we provide the components required for automotive excellence. We promise to only send you good things: parts that have been tested and proven to deliver results.
Next Steps for Your S650:
- Analyze your goals: Are you building a track weapon, a drag racer, or a weekend cruiser?
- Select your parts: Focus on quality brands like Steeda, Borla, and Weld.
- Install with precision: Ensure every bolt is torqued to spec.
- Drive with confidence: Experience the difference that modern muscle engineering makes.
Your Mustang deserves the best. Don't settle for stock. Push the limits, build with purpose, and shop our full catalog of S650 Mustang performance parts to start your transformation today.
DTX Performance: Precision. Power. Performance.
