2003–2004 Ford 4.6L Panther Platform Performance Tuned ECM P71

The Ultimate "Interceptor" P71 Upgrade with PATS Security Delete

Price: $150 | Plug-and-Play Power for 2003–2004 4.6L Models

Give your 03-04 Panther the ultimate "Interceptor" upgrade. This professionally tuned ECM is built to handle the factory intake and knock sensor improvements Ford introduced in 2003. Whether you're running a stock loom or a 4.6 simplified wiring harness, this plug-and-play computer disables the PATS security and pushes your rev limiter to a screaming 7500 RPM.

🏁 Choose Your "Powerhouse" Tune

Let me know which calibration you want loaded when you order:

RAZS (2003 Specific)

The first "hot" file for the 03+ upgrade.
Features aggressive timing maps that make the engine feel significantly punchier.
Ideal for 2003 cars with the newer style suspension and frame.

RZAU (2004 Standard)

The final evolution of the cable-throttle P71 files.
Widely considered the best factory tune Ford ever made for the 4.6L.
Refined transmission control that prevents "gear hunting" in the dirt.
Best choice for heavy-hitting derby or race builds.

ECM Adjustments

PATS Disabled: No-start security issues are completely removed.
7500 RPM Rev Limiter: Set to the max for peak performance.
Knock Sensor Optimization: Takes full advantage of the 03+ engine upgrades.
Speed Limiter: Civilian governors removed.

Compatibility & Shipping

Supported Service Numbers: This product replaces or covers the common PCM part numbers for 2003–2004:

3W7A-12A650 (Standard 2003 P71)
4W7A-12A650 (Standard 2004 P71)
3W7Z-12A650 | 4W7Z-12A650

Models Covered (2003–2004):

Ford Crown Victoria (4.6L)
Mercury Grand Marquis (4.6L)
Lincoln Town Car (4.6L)

The Details:

Ready to Ship: This is a complete ECM provided by Backwoods Racing.
Shipping: Domestic (USA) Only.