6.6L Duramax L5P (2026) #61720 - 90/225

This performance module is designed for L5P 6.6 Duramax engines, improving fuel economy and power response.

• The description claims up to 90hp and 225 ft lbs of power increase.
• The description claims up to 20% improved fuel economy.
• The description claims significant improvements in throttle response and reduction of turbo-lag.
• The description claims no need for additional modifications to stock intake, turbo, or exhaust.