Upgrade stages up to 320 Hp for the 3.5 engine found in Lexus GS350.

Stage 1 upgrade is presented below.

Stock engine specs:    

Capacity: 3456cc                           
bore x stroke: 94 x 83 (mm)
Compression ratio: 11.5:1
Revlimit: 7000 rpm

Power: 309hp
Torque: 372Nm

Stage 1: 

Engine upgrades:

-Stage 1 Software upgrade

Engine performance:

Power: 320hp
Torque: 390Nm

Software upgrades:

Use of 95/100 octane fuel is mandatory.