Upgrade stage up to 370 Hp for the 4.2 V8 engine of Audi S8.

Stage 1 upgrade, is presented below.

Stock engine specs:
Capacity: 3697cc
bore x stroke: 84.5 x 82.4 (mm)
Compression ratio: 11:1

Power: 360hp
Torque: 430Nm

Stage 1:

Engine upgrades:

-Stage 1 Software upgrade

Engine performance:

Power: 370hp
Torque: 440Nm

Software upgrades:

Use of 95/100 octane fuel is mandatory.