YAMAHA E3705 Cdi Box Ecu Ecm Limiter Spark Control

( Manufacturer Part Number: E3705 ), ( Part Type: Ecm Spark Control Box Ecu ), ( Machine Type: Off-road Motorcycle ), ( Color: Black ), ( Material: Plastic ), ( Vintage Part: Yes ), ( Placement On Vehicle: Front ), ( Unit Type: Unit ), ( Universal Fitment: No )

Review YAMAHA Oem Cdi Ecu Ecm Limiter Spark Control Box fits WR450F WR450 REV 2005

Yamaha E3705 - Comprehensive ECU Upgrade for the 2005 WR450F and WR450

The Yamaha E3705 is an advanced Engine Control Unit (ECU) upgrade designed specifically for the 2005 WR450F and WR450 models, offering riders a remarkable transformation of their off-road motorcycles. This state-of-the-art device replaces the original ECU, bringing enhanced power, improved fuel efficiency, and increased control over your machine's performance.

The E3705 ECU is a direct plug-and-play solution, requiring no modification to the wiring harness or engine. Boasting a sophisticated limiter, spark control, and CDI system, this ECU offers unparalleled performance optimization. The limiter allows for adjustable rev limits, ensuring smooth and controlled acceleration, while the spark control provides fine-tuned ignition timing for optimal engine performance.

This ECU also includes a comprehensive fuel injection system, allowing for precise fuel-air mixtures, resulting in improved throttle response, reduced emissions, and increased fuel efficiency. The E3705 ECU also offers adjustable fuel maps, allowing riders to customize their machine's performance to suit their riding style and terrain.

Furthermore, the E3705 ECU features a user-friendly interface, allowing riders to easily access and adjust the settings of their machine. The device is equipped with a programmable MAP and throttle position sensor, enabling riders to fine-tune their engine's performance based on altitude, air pressure, and throttle position.

In conclusion, the Yamaha E3705 ECU upgrade is an essential upgrade for any 2005 WR450F or WR450 owner seeking to maximize their machine's performance, fuel efficiency, and control. With its advanced features, ease of installation, and adjustable settings, the E3705 ECU offers an unrivaled riding experience for off-road enthusiasts.

The Yamaha E3705, a control box for the WR450F and WR450 (2005 models), offers several advantages and potential drawbacks when considering a purchase. Here's a breakdown of the key points:

1. Performance Enhancement: The E3705 provides limiter removal, spark control, and electronic fuel injection (EFI) management, which can improve the motorcycle's overall performance and power delivery.

2. Customization: By allowing users to adjust the ignition timing, fuel injection, and speed limiter, this control box offers a level of customization that can be tailored to specific riding styles and preferences.

3. Improved Efficiency: The E3705 may help improve fuel efficiency by optimizing the fuel injection and ignition settings.

4. Compatibility: The E3705 is designed specifically for the 2005 WR450F and WR450 models, ensuring a perfect fit and reliable operation.

1. Installation Complexity: Installing the E3705 requires a certain level of technical know-how and familiarity with motorcycle electronics.

2. Cost: Compared to other aftermarket upgrades, the E3705 may be considered expensive by some.

3. Potential Risks: Modifying the motorcycle's electronics can potentially lead to issues if not installed correctly or if the settings are not properly adjusted.

4. Limited Durability: Some users have reported issues with the durability of the E3705, particularly under heavy use or in harsh conditions.

The Yamaha E3705 control box offers significant performance enhancements and customization options for the 2005 WR450F and WR450 models. However, potential buyers should keep in mind the complexity of installation, cost, potential risks, and durability concerns. It is essential to weigh these factors against the desired benefits and consider professional installation if unsure about the installation process.

If you are comfortable with motorcycle electronics and are willing to invest in a high-quality performance upgrade, the Yamaha E3705 control box could be an excellent addition to your 2005 WR450F or WR450. However, it is crucial to ensure that the installation is performed correctly and to monitor the device for any potential issues.

Details:

Its in good condition all around. The engine was pulled out of the bike when I got it, so unable to test for spark. One wire is cut, I'm not sure if it had something to do with the street legal kit that was installed on bike. Please see all of the pictures, and feel free to ask any questions.

part #: e3705 prices

• $197.96-$249.90

specifications cyclevintagee:

• for models: Wr450f, Wr450, Rev
• for makes: Yamaha
• for years: 2005
• mpn: E3705
• part type: Ecm Spark Control Box Ecu
• machine type: Off-road Motorcycle
• color: Black
• material: Plastic
• vintage part: Yes
• placement on vehicle: Front
• unit type: Unit
• universal fitment: No

offer cyclevintagee:

• started: August 28, 2025
• quantity: 1
• sold: 0
• availability: In Stock
• best offers: True
• options: Ship-to-home

returns cyclevintagee:

• policy: No Returns

payments cyclevintagee:

• wallet: Paypal
• credit card: Diners-club
• other

seller cyclevintagee:

• rating: 99.2%
• city: Springville, Utah
• # Reviews: 1279

general cyclevintagee:

• condition: Used
• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories

shipping cyclevintagee:

• type: Calculated
• carrier: USPS
• service: USPS Ground Advantage
• transit: 5-9 Days
• class: Standard
• cost: $0.00

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