Upgrade stages from 520Hp up to 540Hp for the 4.0 DFI of the Porsche 991.

Stage 1 & 2 upgrades, are presented below.

Stock engine specs:   

Capacity: 3996cc                           
bore x stroke: 102.7 × 80.4 (mm)
Compression ratio: 12.6:1

Power: 500hp
Torque: 460Nm

Stage 1:

Engine upgrades:

-Stage 1 Software upgrade

Engine performance:

Power: 520hp
Torque: 480Nm

 Stage 2:

Engine upgrades:

-Stage 2 Software upgrade

Engine performance:

Power: 540hp
Torque: 500Nm