Performance:
* Cold Air Intake (CAI): A significant improvement in airflow to the engine, resulting in noticeable horsepower and torque gains. Popular brands include JLT, BBK, and S&B. Ensure it's properly tuned after installation.
* Exhaust System: Cat-back exhausts (from the catalytic converters back) are a popular choice. They improve exhaust flow, offering a performance boost and a more aggressive sound. Headers are another option (often requiring tuning) but can be more involved and potentially affect emissions.
* Tune: A custom tune is arguably the most important performance upgrade. It optimizes the engine's computer to take advantage of other modifications (like CAI and exhaust) and can significantly increase power and efficiency. Look for reputable tuners with experience with the 4.6L 3V engine.
* Supercharger or Turbocharger: This is a major upgrade involving significant cost and potentially engine modifications. It dramatically increases horsepower but also requires careful planning and installation. These are often coupled with other supporting modifications.
* Gears: Changing the rear differential gear ratio (e.g., to 3.73 or 4.10) will improve acceleration but may slightly decrease top speed and fuel economy.
Handling:
* Suspension: Upgraded shocks and struts (e.g., from Bilstein, Koni, or Eibach) significantly improve handling and ride quality. Lowering springs can enhance the look and handling, but may reduce ride comfort. Consider a complete suspension kit for a more balanced approach.
* Sway Bars: Thicker sway bars reduce body roll in corners, improving handling response.
* Brakes: Upgraded brake pads and rotors provide improved stopping power and feel. Consider larger brake rotors and calipers for more substantial improvement.
Appearance:
* Wheels and Tires: Upgraded wheels and performance tires dramatically improve the look and handling. Choose wheels and tires that match your desired driving style.
* Body Kit: Adding a body kit can enhance the aggressive look of the Mustang.
Other Considerations:
* Clutch: If you plan on significant power upgrades, a performance clutch might be necessary to handle the increased torque.
* Transmission Cooler: For cars with automatic transmissions, an upgraded transmission cooler will help prevent overheating, especially under heavy use.
Important Note: Before making any major modifications, research carefully and choose reputable parts and installers. Consider the impact on your car's warranty (many modifications will void parts of it). Always ensure proper tuning after any significant performance upgrades.
Starting with a CAI and exhaust, followed by a tune, is a popular and effective route for boosting performance without breaking the bank. Prioritize what's most important to you (performance, handling, or aesthetics) when selecting your upgrades.
