Spool FX-350 Upgraded High Pressure Pump Kit [M256]

The Spool FX-350 is an advanced high-pressure fuel pump designed to push the limits of fuel delivery on Mercedes M256 engines, making it perfect for high-performance builds. This upgrade delivers 35Mpa of fuel pressure, a significant increase over the 25Mpa offered by the FX-200, which results in a 40% boost in fuel flow before reaching the injector's maximum capacity.

Key Features:

• 35Mpa Pressure Delivery: Achieves a higher flow rate for improved fuel atomization and efficient combustion, resulting in more power, better fuel economy, and reduced emissions.
• 40% More Fuel Flow: Supports bigger turbos and higher ethanol blends, providing 90% more flow capacity than the stock HPFP.
• Enhanced Fuel Atomization: Finer fuel droplets lead to more complete combustion, increasing engine efficiency and performance.

Why You Need It:

The stock HPFP on the M256 engine is limited when it comes to tuning and increasing power output. The FX-350 adds 90% more flow capacity, making it essential for running larger turbos and higher ethanol blends, ensuring your engine reaches its full potential.

What’s Included in the Kit:

• 1x FX-350 Upgraded High-Pressure Fuel Pump: Delivers 90% more fuel flow capacity for high-performance applications.
• 1x Ethanol Content Monitor Kit: Includes a mobile app for real-time monitoring of ethanol content and fuel temperature.
• 1x Bosch Spec 10-Micron High-Flow Fuel Filter: Provides optimal fuel filtration without pressure drop.
• Upgraded Fuel Lines and Install Hardware: High-quality, black nylon-coated, braided steel PTFE core fuel lines, fully compatible with E85.
• Spool 10-Micron Filter Unit: Offers top-tier filtration for the M256 platform without compromising fuel pressure, protecting the high-pressure pump and injectors from debris.

Spool Ethanol Content Monitor:

The kit includes an Ethanol Content Analyzer (ECA) with BLE 4.0 low-energy technology, allowing continuous monitoring via a mobile app without disrupting your device's other Bluetooth connections. Fuel lines are E85-compatible, ensuring long-lasting performance.

Tune Changes Required:

Calibration changes are necessary to operate the FX-350 safely and efficiently. These adjustments should be made prior to starting the vehicle with the upgraded pump to prevent damage and warranty voids. Spool Performance provides calibration details to your tuner and can assist in connecting you with experienced tuners for optimal results.

Low-Pressure Fuel Pump Upgrade:

Ensuring proper low-pressure fueling is critical for the longevity and function of high-pressure pumps in direct injection (DI) systems. Inadequate low-pressure fueling can damage the high-pressure pump's piston and bore, voiding warranties. Plan your fuel system upgrades to avoid such issues.

Note: 'New' merchandise may be returned for exchange or refund within 15 days from the date of shipment. 'New' merchandise must be unused and free from installation or mounting damage. Installation or modification of parts waives your right to returns, refunds, or exchanges.