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About :

Chiptuning-FILE is the best tuning server on the web for bmw x4 m tuning files. all bmw tuning files are custom made and thoroughly tested on a 4x4 dynometer. the development of each bmw tuning file is the result of perfection and dedication by our programmers. many tuners in the world are working on Chiptuning-FILE because they are trusting our result.

NO UPGRADES

ORIGIN
480 Hp 600 Nm
CHIPTUNING
600 HP 800 Nm
DIFFERENCE
+120 HP +200 Nm