Upgrade stages up to 448 Hp for the 5.0 engine found in Lexus IS-F.

Stage 1 upgrade, is presented below.

Stock engine specs:    

Capacity: 4967cc                           
bore x stroke: 94 x 89.4 (mm)
Compression ratio: 11.8:1
Revlimit: 7000 rpm

Power: 423hp
Torque: 520Nm

Stage 1: 

Engine upgrades:

-Stage 1 Software upgrade

Engine performance:

Power: 448hp
Torque: 525Nm

Software upgrades:

Use of 95/100 octane fuel is mandatory.