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Alfa Romeo Giulietta QV 1.75TBi 235 & 240Hp - Stage 1 & 2

Upgrade stages from 275 to 285 Hp for the TBi engine found in Alfa Romeo Giulietta. 

Stage 1 & Stage 2 upgrades, are presented below.



Stock engine specs:    

Capacity: 1742cc                           
bore x stroke: 83 x 80.5 (mm)
Compression ratio: 9.25:1

Full boost: 1.5bar@2000 rpm
Constant pressure:1.2bar
Pressure at revlimit:0.9bar
Revlimit: 6500 rpm

Power: 235 & 240hp
Torque: 340Nm


Stage 1: 

Engine upgrades:

-Stage 1 Software upgrade

Engine performance:

Full boost: 1.6bar@2000 rpm 
Constant pressure:1.4bar 
Pressure at revlimit:1.2bar 
Revlimit: 6500 rpm

Power: 275hp
Torque: 400Nm









Stage 2:

Engine upgrades:

-Full 63.5mm exhaust
-Air filter

-Stage 2 Software upgrade

Engine performance:

Full boost: 1.7bar@2000 rpm 
Constant pressure:1.55bar 
Pressure at revlimit:1.35bar 
Revlimit: 6500 rpm

Power: 285hp
Torque: 420Nm


Giulietta Stage 2 Dyno









Software upgrades:

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

Use of 95/100 octane fuel is mandatory.



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