What Is the DeatschWerks 9-201s-1005 Fuel Pump?

The DeatschWerks 9-201s-1005 is a:

• 255 liter-per-hour (LPH)
• In-tank electric fuel pump
• Complete with installation kit

It’s designed as a direct-fit or near-direct-fit upgrade for a wide variety of performance vehicles needing increased fuel flow over the factory pump.

This fuel pump supports:

• Higher horsepower levels
• Improved fuel delivery
• Ethanol-compatible setups
• Stable fuel pressure under load

Especially important once factory fueling starts approaching its limits.

Which, on turbo cars, happens shockingly fast.

DW200 series, 255lph in-tank fuel pump with install kit for G35 03-08, Q45 91-01, and Legacy GT 2010+. Founded in 2004, DeatschWerks, LLC is a corporation dedicated to providing application specific, high-performance fuel systems solutions.

Why Upgrade to a 255LPH Fuel Pump?

Factory fuel pumps are engineered around:

• OEM horsepower
• Factory boost levels
• Conservative fuel demand

Once modifications increase airflow, the stock pump can struggle to maintain:

• Proper fuel pressure
• Injector supply
• Stable air/fuel ratios

A 255LPH pump significantly increases fuel delivery capability, making it ideal for:

• Bolt-on turbo setups
• Mild-to-moderate E85 builds
• Street performance cars
• Flex fuel systems

Because lean conditions under boost are basically the automotive version of Russian roulette.

Situated in Oklahoma City, Oklahoma, DW operates out of its own 12, 000 square feet facility that houses all the company’s functions including design/engineering, manufacturing, quality assurance, and administration.

The Perfect Entry-Level Performance Fuel Pump

One reason the DeatschWerks 255LPH pump remains so popular is because it hits an excellent balance between:

• Fuel flow
• Reliability
• Cost
• Street drivability

This pump is ideal for enthusiasts building:

• Daily-driven turbo cars
• Mild E85 setups
• Street/strip hybrids
• Moderate horsepower projects

Without immediately requiring:

• Full return systems
• Dual pumps
• Brushless fuel systems
• Race-car-level complexity

Not every build needs enough fuel volume to support a moon launch.

Yet.

DeatschWerks roots were established by offering high float drop-in fitment fuel injectors for Nissan engines such as the preferred SR20DET, VG30DETT, and VQ35DE. Soon thereafter, DW expanded to hide Subaru, Mitsubishi, and other popular sport compact makes.

Why DeatschWerks 255LPH Fuel Pump Matter on Turbocharged Cars

Turbocharged engines consume significantly more fuel than naturally aspirated setups.

Especially once you add:

• Increased boost pressure
• ECU tuning
• Larger injectors
• Ethanol fuel

A weak fuel pump can create:

• Lean air/fuel ratios
• Fuel pressure drops
• Misfires
• Detonation
• Engine damage

And turbocharged engines tend to react very poorly to fuel starvation.

Usually dramatically.
Usually expensively.

The DeatschWerks line-up of fuel injectors includes over 250 applications and sizes that cover both sport compact and up to date muscle applications. In 2010 DeatschWerks entered new territory after they released the DW300-series in-tank fuel pump. Adhering to their philosophy of application specific solutions, the DW301 fuel pump is to be had with fitment kits for over 30 popular applications. Then in 2011 DW expanded their fuel pump line to incorporate the DW200 and a compact fuel pump solution, the DW65c.

E85 Compatibility Makes a Huge Difference

Modern enthusiasts increasingly run E85 because it offers:

• Higher effective octane
• Better knock resistance
• Cooler combustion temperatures
• Increased boost capability

But ethanol requires substantially more fuel volume than gasoline.

That means upgraded fuel pumps become critical.

The DeatschWerks 255LPH pump is commonly used on:

• Flex fuel builds
• E85 conversions
• Ethanol-capable street setups

Especially moderate horsepower combinations where:

• Factory pumps fall short
• Larger race pumps become unnecessary

Flows 255 liters per hour
In-tank application specific fitment
Ethanol compatible
Quiet and reliable turbine impeller

Included Installation Kit Makes the Upgrade Easier

The included installation kit helps simplify installation by providing:

• Necessary hardware
• Wiring components
• Fuel system integration pieces

This helps create:

• Cleaner installation
• Better reliability
• Reduced installation headaches

Which is refreshing considering many aftermarket projects usually involve:

• Missing hardware
• Emergency hardware store runs
• Questionable language choices

Common Applications for the DW 255LPH Pump

The DeatschWerks 255LPH pump is commonly installed on:

• Subaru WRX/STI
• Mitsubishi Evolution
• Nissan 240SX
• Honda Civic turbo builds
• Mazda Miata turbo projects
• Mustang GT setups
• Toyota Supra applications

Basically:
Any vehicle where horsepower goals have exceeded factory engineering expectations.

Supporting Mods You Should Pair With It

A fuel pump upgrade works best alongside:

• Larger injectors
• ECU tuning
• Ethanol-safe fuel lines
• Adjustable fuel pressure regulator
• Flex fuel sensor (if applicable)

Because fuel systems work together as complete systems.

One weak component eventually limits everything else.

Usually right at peak boost.

Professional Tuning Still Matters

Installing a fuel pump alone doesn’t automatically create horsepower.

Proper ECU calibration remains critical for:

• Safe fueling
• Correct injector operation
• Stable air/fuel ratios
• Reliable boost control

Because modern turbo cars make enough power to destroy themselves extremely efficiently when tuning goes wrong.

Why Enthusiasts Trust DeatschWerks

DeatschWerks has become one of the most respected names in aftermarket fueling because they focus heavily on:

• Injector technology
• Fuel pump reliability
• Ethanol compatibility
• Motorsport durability

Their products are used extensively across:

• Street performance
• Drag racing
• Drift competition
• Time attack
• Roll racing

Reliable fueling remains one of the most important foundations of reliable horsepower.

Without it, everything else becomes temporary.

Final Thoughts

The DeatschWerks 9-201s-1005 255LPH In-Tank Fuel Pump is one of the best foundational fuel upgrades for enthusiasts building reliable horsepower.

With:

• Increased fuel flow
• E85 compatibility
• Proven reliability
• Included installation hardware

…it’s an excellent choice for:

• Turbocharged street cars
• Moderate horsepower builds
• Flex fuel applications
• Daily-driven performance vehicles

Because reliable fuel delivery is significantly cooler than trying to diagnose melted spark plugs in a parking lot.