Precision EFI Stage 1 ECU Reflash

900 ACE Naturally Aspirated (Non-Turbo)

Compatible with:

• Ski-Doo Renegade 2019–2024
• Ski-Doo Expedition 2020–2024

***For model 23+ make sure that you snowmobile is using ME17 (black color) ECU***

After countless customer requests, Precision EFI is proud to introduce the Stage 1 ECU Reflash for the naturally aspirated 900 ACE engine.

Designed for riders who want stronger performance without sacrificing reliability, the Stage 1 transforms the character of the 900 ACE by dramatically improving throttle response and increasing power—all without requiring any additional hardware.

More Power. Faster Response.

The factory calibration is designed to satisfy every type of rider, leaving considerable room for improvement in throttle response and engine performance.

Our Stage 1 calibration delivers:

• Up to 10 additional horsepower
• Nearly twice the throttle response
• Significantly quicker acceleration
• Instant throttle pickup throughout the RPM range
• Smoother, more responsive power delivery

The result is a sled that feels lighter, quicker, and much more enjoyable to ride in every situation, from trail cruising to spirited riding.

Retains All Three Riding Modes

The Precision EFI Stage 1 preserves the factory riding mode functionality while optimizing each mode for its intended purpose.

Eco Mode

• Optimized for maximum fuel economy
• Continues to operate safely on 87-octane gasoline
• Ideal for long-distance rides

Standard Mode

• Calibrated for improved throttle response and stronger acceleration
• Requires 91-octane premium fuel

Sport Mode

• Delivers the most aggressive throttle response and maximum performance
• Requires 91-octane premium fuel

Each mode provides a distinct riding experience, allowing you to choose between maximum efficiency or maximum performance at the touch of a button.

No Additional Parts Required

The Precision EFI Stage 1 is a true plug-and-play ECU calibration.

• No mechanical modifications required
• No additional hardware to purchase
• Maintains OEM reliability and drivability
• Quick installation

Whether you're looking for better trail performance, stronger passing power, or simply a more responsive sled, the Precision EFI Stage 1 unlocks the true potential of the naturally aspirated 900 ACE while preserving the smooth, dependable character that made this engine so popular.

Simple. Reliable. Noticeably Faster. That's the Precision EFI difference.