Ford Racing 21-24 Ford Bronco 2.7L Performance Calibration - M-9603-B27

The Ford Racing M-9603-B27 Bronco 2.7L EcoBoost Performance Calibration is a factory-engineered tune designed specifically for 2021–2024 Ford Bronco owners who want measurably more power without sacrificing the reliability they depend on for both daily driving and off-road use. Engineered and dyno-tested by Ford Racing Parts, this performance calibration is California Air Resources Board (CARB) compliant — meaning it's street-legal in all 50 states — and carries a Ford Racing Parts 3-year/36,000-mile warranty.

Key Features & Benefits

• 355 hp @ 5,500 rpm: A significant power increase over the factory output, giving your Bronco noticeably stronger acceleration on the trail and on the road.
• 433 lb-ft of torque @ 3,500 rpm: More peak torque means stronger low-to-mid-range pulling power — exactly what you need when crawling over rocks or hauling gear.
• Improved throttle response throughout the RPM range: The revised calibration sharpens throttle input so the engine reacts faster to your right foot, reducing the flat feeling common in stock EcoBoost tunes.
• Premium fuel required: The calibration is optimized for premium-grade gasoline to extract maximum performance safely.
• Tire size accommodation up to BFG 37×12.5R17 KO2 (579 revolutions per mile): The calibration allows you to recalibrate for larger off-road tires — up to the popular BFG 37-inch KO2 — so your speedometer, odometer, and shift points stay accurate after a tire upgrade. (Additional modifications required.)
• Axle ratio/FDU support up to 5.38: If you're upgrading your axle gearing for better crawl ratios, this calibration can accommodate ratios up to 5.38, keeping everything in sync.
• Enables M190-to-M210 front drive unit upgrade: By reconfiguring the DLCM module, this calibration supports owners who want to upgrade to the stronger M210 front drive unit — a popular modification for Broncos that see serious off-road use.
• 50-state street legal (EPA & CARB compliant): You won't have to worry about emissions inspection failures. The CARB executive order means this tune won't adversely affect emissions when installed properly.
• Ford Racing Parts 3-year/36,000-mile warranty: Backed by the same team that engineered your engine, giving you confidence that performance gains don't come at the cost of long-term reliability.
• Dyno-tested by Ford Racing: Not a third-party flash tune — this calibration is developed and validated by Ford's own performance engineering team.

Specifications

• Part Number: M-9603-B27
• Brand: Ford Racing Parts
• Peak Power: 355 hp @ 5,500 rpm
• Peak Torque: 433 lb-ft @ 3,500 rpm
• Fuel Requirement: Premium fuel required
• Max Tire Size Supported: BFG 37×12.5R17 KO2 (579 revolutions per mile; additional modifications required)
• Max Axle Ratio Supported: Up to 5.38
• Front Drive Unit Upgrade: Enables M190 to M210 FDU swap via DLCM reconfiguration
• Emissions Compliance: EPA & CARB compliant — 50-state street legal
• Warranty: Ford Racing Parts 3-year / 36,000-mile warranty
• Region: For US & Canadian vehicles
• Instruction Sheet: Available (PDF)

Fitment

This performance calibration is engineered for the 2021–2024 Ford Bronco equipped with the 2.7L EcoBoost V6 engine (both 2-door and 4-door). It is intended for US and Canadian market vehicles. If you own a 2023–2024 Bronco with the 2.3L EcoBoost four-cylinder, this calibration does not apply — Ford Racing offers separate calibrations for that engine. Always confirm your exact engine code before ordering. The Ford Performance website also references fitment through 2026, but the product listing for this SKU specifically covers 2021–2024 model years — contact us if you need clarification for your build year.

What's in the Box

This listing is sold as one unit (each). A PDF instruction sheet is available from Ford Racing Parts. The calibration is delivered as a performance calibration kit. If you require the Ford Performance Pro-Cal tool/device for installation, confirm whether it is bundled or must be sourced separately before ordering — reach out to our team and we'll help clarify what you need for your specific setup.

Why Buy from ThreePiece.us

• Free shipping on every order: No minimum threshold, no surprises at checkout — every M-9603-B27 ships free.
• Affirm financing available: Spread the cost of your Bronco build over time with flexible Affirm payment plans at checkout.
• Expert fitment support: Not sure if this calibration is right for your exact Bronco build, trim, or planned modifications? Our team can help you confirm compatibility before you buy — avoiding costly returns.
• Ford Racing Parts specialist: We stock Ford Racing performance parts and understand the Bronco platform, so you get informed answers, not generic responses.

Frequently Asked Questions

Q: Will this calibration work on my 2021–2024 Bronco with the 2.3L EcoBoost?
A: No. The M-9603-B27 is specifically engineered for the 2.7L EcoBoost engine. Ford Racing produces separate calibrations for the 2.3L EcoBoost Bronco. Double-check your window sticker or door jamb label to confirm your engine before ordering.

Q: Is this tune street-legal? Will it pass emissions?
A: Yes. This calibration carries EPA and CARB compliance, meaning it has been determined by the California Air Resources Board not to adversely affect emissions when installed and used properly. It is legal for street use in all 50 US states.

Q: Do I need to run premium fuel after installing this calibration?
A: Yes. Ford Racing specifies that premium fuel is required with this calibration. Running regular-grade fuel is not recommended, as the tune is optimized for premium gasoline to deliver the rated 355 hp and 433 lb-ft safely.

Q: Can I run 37-inch tires after installing this calibration?
A: The calibration supports tire sizes up to a BFG 37×12.5R17 KO2 (579 revolutions per mile), which allows you to adjust for accurate speedometer and drivetrain behavior with larger tires. However, Ford Racing notes that additional modifications may be required beyond the calibration itself. Contact our team or refer to the included instruction sheet for full details on what those additional steps involve.