Upgrade stages from 403Hp up to 415Hp for the 3.6 GT3 of the Porsche 996.

Stage 1 & 2 upgrades, are presented below.

Stock engine specs:   

Capacity: 3600cc                           
bore x stroke: 100 × 76.4 (mm)
Compression ratio: 11.7:1

Power: 381hp
Torque: 385Nm

Stage 1:

Engine upgrades:

-Stage 1 Software upgrade

Engine performance:

Power: 403hp
Torque: 415Nm

 Stage 2:

Engine upgrades:

-Stage 2 Software upgrade

Engine performance:

Power: 415hp
Torque: 425Nm

Software upgrades:

Boost control is achieved using the OEM ECU and N75 valve.