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Citroen DS4 1.6THP 200Hp - Stage 1 & 2

Upgrade stages from 220 to 250 Hp for the 1.6THP engine found in Citroen DS4.

Stage 1 & Stage 2 upgrades, are presented below.

 

 

Stock engine specs:    

Capacity: 1598cc                           
bore x stroke: 77 x 85,6
Compression ratio: 10.5:1
Turbocharger: KK K03

Full boost: 1.1bar@1700 rpm
Constant pressure:0.9bar
Pressure at revlimit:0.75bar
Revlimit: 6500 rpm

Power: 200hp
Torque: 275Nm

 

Stage 1: 

Engine upgrades:

-Stage 1 Software upgrade

Engine performance:

Full boost: 1.25bar@1700 rpm 
Constant pressure:1.15bar 
Pressure at revlimit:1bar 
Revlimit: 7000 rpm

Power: 220hp
Torque: 320Nm

 

Stage 2:

Engine upgrades:

-Air filter
-Full 63.5mm exhaust
-Bigger intrercooler
-Stage 2 Software upgrade

Engine performance:

Full boost: 1.35bar@1700 rpm 
Constant pressure:1.25bar 
Pressure at revlimit:1.15bar 
Revlimit: 7000 rpm

Power: 250hp
Torque: 360Nm

 

Software upgrades:
The fuel pressure regulator was tuned to 130 bar at high rpm.
The variable valve timing was also tuned, making higher valve overlap at 4000 rpm.

Use of 95/100 octane fuel is mandatory. 

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