Hartge has officially released its software ECU piggyback tune for the BMW 4-cylinder turbo N20 engine. It yields impressive power gains of +45 horsepowers and +45 ft-lb torque! The tune can be applied to the F30 328i, F10 528i, F25 X3 xDrive28i, and E89 Z4 sDrive28i. Check ... CONTINUED
12 years ago
