This mod contains the X15 series engines produced since 2016, replacing the ISX series to meet EPA specifications.
It contains the following engines, in the Stock and Delete Straight Pipes variants:
Efficiency
-485 HP
-500 HP
Efficiency ADEPT
-485 HP
-500 HP
Performance
-550 HP
-600 HP
Performance ADEPT
-550 HP
-600 HP
Delete Straight Pipes
-485 HP
-500 HP
-550 HP
-600 HP