Garrett GTX3576R for the 2.5T engine of Audi TT RS, using stock head, fuel injectors and pump.

Stock engine specs:    

Capacity: 2480cc                           
bore x stroke: 82.5 x 92.8 (mm)
Compression ratio: 10:1
Turbocharger: KKK K16

Full boost: 0.6bar@1600 rpm
Constant pressure:0.4bar
Pressure at revlimit:0.35bar
Revlimit: 6500 rpm

Power: 340hp
Torque: 450Nm

Engine upgrades:

-Garrett GTX3576R turbocharger 

-Forged pistons 

-Forged rods

- full 80mm exhaust

-Exhaust monifold

-external WG 

-Bigger intercooler

-Plex PBC boost control

Engine performance:

Full boost: 2.3bar@4000 rpm
Constant pressure:2.3bar
Pressure at revlimit:2.35bar
Revlimit: 7500 rpm

Power :653 Hp
Torque : 828 Nm

Dyno:

Software upgrades:

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

Use of 98/100 octane fuel is mandatory.

Photos