BMW G30/G31 540i B58 ECU Remap - Stage 1, Stage 2, Stage 2+

Direct-fit ECU remap for the BMW G30 and G31 540i with B58 engine. No hardware changes needed for Stage 1 (420 bhp). Stage 2 (440 bhp+) adds sharper turbo response and stronger mid-range torque. Stage 2+ (460 bhp+) requires supporting mods and delivers maximum safe output.

• Cold start delete, adjustable overrun burbles and GTS-style startup sound
• Fully custom-built per vehicle - not generic or off-the-shelf
• Dyno-verified on hub dyno with before/after graphs
• OBD flash or bench unlock support included where required