What Is the DeatschWerks DW300 CTS-V Pump Module?

The DeatschWerks DW300 module is a:

• High-flow in-tank fuel pump module
• Built specifically for 2009–2012 Cadillac CTS-V applications

Centered around the proven DW300 fuel pump platform, this module is engineered to provide:

• Increased fuel flow
• Better pressure stability
• Improved support for high-horsepower applications
• Enhanced E85 compatibility

Especially important for:

• Pulley-upgraded LSAs
• Cammed CTS-V builds
• Flex fuel setups
• Higher boost applications

Because factory fuel systems tend to get nervous once the dyno graph starts climbing aggressively.

Vehicle Fitment

The DeatschWerks DW300 Performance Pump Module fits:

• 2009 Cadillac CTS-V
• 2010 Cadillac CTS-V
• 2011 Cadillac CTS-V
• 2012 Cadillac CTS-V

Including:

• CTS-V Sedan
• CTS-V Coupe
• CTS-V Wagon

Equipped with:

• 6.2L Supercharged LSA V8

Which remains one of GM’s greatest factory performance engines.
And one of the most effective tire-destroying devices ever built.

Why Upgrade the CTS-V Fuel System?

The factory CTS-V fuel system works well for:

• Stock boost levels
• Mild tuning
• Conservative modifications

But once owners add:

• Smaller blower pulleys
• Camshaft upgrades
• E85 tuning
• Ported superchargers

…the fuel demand rises dramatically.

A high-flow pump module helps maintain:

• Stable fuel pressure
• Injector supply consistency
• Safe air/fuel ratios
• Reliable fueling under boost

Because a supercharged LSA consumes fuel with all the restraint of a fighter jet at takeoff.

What Makes the DW300 So Popular?

The DW300 became one of the most respected in-tank fuel pumps in the aftermarket because it offers:

• Excellent flow capability
• Strong reliability
• Ethanol compatibility
• Quiet operation

This makes it ideal for:

• Street-driven performance cars
• High-horsepower builds
• E85 setups
• Modern EFI systems

Without immediately stepping into:

• Full brushless race systems
• Multi-pump surge tanks
• Dedicated fuel cells

Not every CTS-V owner wants their trunk sounding like industrial machinery.

Some still enjoy luxury occasionally.

Why E85 Changes Fuel Demand

Modern CTS-V owners frequently switch to E85 because ethanol provides:

• Better knock resistance
• Cooler combustion temperatures
• Increased timing capability
• More boost tolerance

But ethanol also requires substantially more fuel volume than gasoline.

That means:

• Fuel pumps work harder
• Injectors flow more
• Fuel pressure stability becomes critical

The DW300 module helps provide the increased fuel delivery required for:

• Flex fuel systems
• E85 tuning
• Aggressive street builds

Because lean boosted V8s become expensive remarkably quickly.

Perfect for Pulley and Cam Upgrades

One of the first modifications most CTS-V owners install is:

• A smaller supercharger pulley

Followed immediately by:

• “I should probably upgrade the fuel system.”

Correct.

The DW300 module supports:

• Increased airflow
• Higher boost levels
• Larger injector demand
• More aggressive tuning

Especially important once:

• Camshaft upgrades
• Ported blowers
• Long tube headers
• E85 conversions

…start pushing fuel demand well beyond OEM limits.

OEM-Style Integration Matters

One major advantage of the DeatschWerks module design is:

• OEM-style fitment and integration

This helps:

• Simplify installation
• Improve reliability
• Maintain drivability
• Reduce compatibility headaches

Especially important on modern GM platforms where:

• Fuel system electronics
• Pressure management
• ECU integration

…all work together closely.

Because modern Cadillacs are surprisingly sophisticated underneath the tire smoke.

Supporting Mods You Should Pair With It

A fuel pump module upgrade works best alongside:

• Larger injectors
• E85-compatible fuel lines
• Flex fuel sensors
• ECU tuning
• Upgraded fuel pressure regulation

Because fuel systems are ecosystems.

One weak component eventually limits everything else.

Usually during a pull.
Usually publicly.

Professional Tuning Recommended

After fuel system upgrades:

• Fuel trims should be verified
• Pressure monitored
• Air/fuel ratios recalibrated
• Injector scaling adjusted

Especially on:

• E85 builds
• Increased boost setups
• Cammed LSA applications

Because the CTS-V platform makes enough torque to punish bad tuning decisions instantly.

Why Enthusiasts Trust DeatschWerks

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

• Fuel injector engineering
• High-flow fuel pumps
• Ethanol compatibility
• Motorsport reliability

Their products are trusted across:

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

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

Not blower noise.
Not dyno charts.
Fuel.

Final Thoughts

The DeatschWerks DW300 Performance Pump Module for the 2009–2012 Cadillac CTS-V is an outstanding upgrade for enthusiasts building serious power on the supercharged LSA platform.

With:

• Increased fuel flow
• Proven DW300 reliability
• E85 compatibility
• OEM-style integration

…it’s an ideal solution for:

• Pulley-upgraded CTS-Vs
• Cammed LSA builds
• Flex fuel setups
• High-performance street and track cars

Because once boost levels start climbing, reliable fuel delivery becomes absolutely critical.

And supercharged Cadillacs have zero sympathy for weak fuel systems.

DW DW300 Gas Pumps