The Citro�n C4 2.0i 16v 138hp (2004 – 2010) produces 138 hp and 190 Nm in standard form. With Stage 1 software that rises to about 148 hp and 210 Nm: a gain of 10 hp (+7%) and 20 Nm (+11%).

This is a petrol engine with a displacement of 1,997 cc and engine code EW10WJ4. The engine is controlled by the Marelli IAW 6LP and Siemens/Continental SID803A. The software file can be written with tools such as Alientech K-TAG and Alientech KESSv2.

Besides Stage 1, the following options are available for this vehicle: DECAT, DTC Removal, START/STOP OFF, FLAPS, Pop & Bang Crackle map and Vmax.

Frequently asked questions

How much power and torque does a Citro�n C4 2.0i 16v 138hp gain with Stage 1?

About 10 hp and 20 Nm: from 138 hp / 190 Nm to roughly 148 hp / 210 Nm. The exact gain depends on engine condition and fuel quality.

Which ECU does a Citro�n C4 2.0i 16v 138hp use?

Marelli IAW 6LP and Siemens/Continental SID803A.

Which tools can read a Citro�n C4 2.0i 16v 138hp?

Alientech K-TAG and Alientech KESSv2.

Which extra options are available for a Citro�n C4 2.0i 16v 138hp?

DECAT, DTC Removal, START/STOP OFF, FLAPS, Pop & Bang Crackle map and Vmax.

Figures are indicative and vehicle specific. Check the regulations that apply in your country before modifying engine software.