I. Relatively Simple & Affordable Modifications:
* Cold Air Intake (CAI): Replaces the restrictive factory air intake system with one that allows for greater airflow into the engine. This is usually a relatively easy installation and provides a noticeable, though modest, horsepower gain.
* Exhaust System Upgrade: Replacing the restrictive factory exhaust with a performance exhaust (headers, cat-back system, or both) reduces back pressure, allowing the engine to breathe more easily. This offers a more substantial horsepower increase than a CAI alone, and often improves the sound. Note: Check your local emissions regulations before installing aftermarket headers, as some areas have strict requirements.
* Tune (ECU Re-flash or chip): After installing performance modifications like a CAI and exhaust, you'll need to adjust the engine's computer (ECU) to optimize the fuel delivery and ignition timing for the increased airflow. This is crucial to avoid running lean and potentially damaging the engine. A professional tune is highly recommended to ensure safety and optimal performance.
* Underdrive Pulley Kit: Reduces the load on the engine's accessories (alternator, power steering pump, etc.), freeing up some horsepower. However, this can put extra stress on some components and may shorten their lifespan.
II. More Involved & Expensive Modifications:
* Performance Cam Shaft: Replacing the factory camshaft with a performance camshaft alters the valve timing, improving airflow and increasing horsepower at specific RPM ranges. This is a more advanced modification requiring professional installation and often necessitates additional tuning.
* Supercharger or Turbocharger: Forced induction (adding a supercharger or turbocharger) significantly increases horsepower. This is a major undertaking that requires extensive mechanical knowledge or professional installation. It's also considerably more expensive than bolt-on modifications.
* Engine Building/Stroking: This involves modifying internal engine components such as pistons, connecting rods, crankshaft, and potentially the cylinder block, to increase the engine's displacement and horsepower. This is a very complex and expensive modification requiring significant mechanical expertise. It often involves replacing many internal engine parts.
III. Important Considerations:
* Professional Tuning: After any significant modification, professional dyno tuning is highly recommended. This ensures optimal performance, prevents engine damage from running lean, and maximizes the gains from your modifications.
* Reliability: More aggressive modifications often come at the cost of reduced reliability. The more you push your engine beyond its factory specifications, the higher the risk of component failure.
* Emissions Compliance: Check your local regulations regarding emissions compliance before making any modifications to your exhaust system. Some modifications may not be legal in your area.
* Cost: The cost of horsepower additions can vary wildly, from a few hundred dollars for a CAI to thousands for forced induction or engine building.
Recommendation: Start with the simpler bolt-on modifications (CAI and exhaust) and a professional tune. Assess the results and decide if you want to proceed with more involved and expensive modifications. Always prioritize safety and consult with experienced mechanics or tuners to avoid damaging your engine. Don't hesitate to seek advice from Mustang forums and online communities; they are a great resource for specific recommendations and advice for your 2000 GT.
