447 HP Stage 1 ECU Software | BMW X3 M40i / X4 M40i part-category-grille margin:0 0 40px

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there is no need to purchase a custom tune exclusively for race gas usage

and superior durability

Satin Gunmetal Center

Customization Options:

447 HP Stage 1 ECU Software | BMW X3 M40i / X4 M40i part-category-grille margin:0 0 40pxStock 93 Octane Stock Wheel HP & TQ: 328 WHP & 358 lb ft WTQ Stock Flywheel HP & TQ: 401 HP & 436 lb ft TQ Tuned 93 Octane Tuned Wheel HP & TQ: 367 WHP & 407 lb ft WTQ Tuned Flywheel HP & TQ: 447 HP & 496 lb ft TQ Delta Wheel HP & TQ: 38 WHP 49 lb ft WTQ Delta Flywheel HP & TQ: 46 HP & 60 lb ft TQ *This can only be installed at an authorized CarBahn dealer! Top speed governor removed CarBahn EVO Intelligent software adapts to various fuel octane