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About :

Chiptuning-FILE is the best tuning server on the web for bmw 4 serie 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
340 Hp 700 Nm
CHIPTUNING
380 HP 750 Nm
DIFFERENCE
+40 HP +50 Nm