G-POWER Bi-Tronik II performance software V3- electronic optimization by motronic adjustment Basis: X6M, factory output 555 hp (408kW) output gain approx. 170 hp (125kW); to 725 hp (533KW) max. torque approx. 890 Nm; incl. V-MAX release costing of: first catalysts replacement pipes, sport catalysts, stainless steel rear silencer, optimized connection tubes between turbocharger and cylinder heads, to minimize the pressure- and shock losses. For export only.
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