The Weistec M273 ECU upgrade For the naturally aspirated 5.5 liter V8 engine provides substatial gains across the entire powerband putting down the power when you need it! Paired with our TCU tune, you can transform the entire driveabilty of your machine. Use the Cypher Handheld Tuner to switch between your stock tune, Weistec tune, and any other additional ECU tune from us at anytime!

Key Features:

• Improved throttle response
• Optimized Fueling
• Optimized Ignition Timing

W.1

• Weistec Horsepower 416
• Weistec Torque 420
• Manufacturer Weistec
• Stock Horsepower 382
• Stock Torque 391

W.2

• Weistec Horsepower 426
• Weistec Torque 430
• Manufacturer Weistec
• Stock Horsepower 382
• Stock Torque 391