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Home / ECU Remapping / BMW M3
S58 Engine

BMW M3

G80/G81

The G80 M3 Competition with the S58 twin-turbo straight-six. A serious performance saloon with huge tuning potential from Stage 1 through to full hybrid turbo builds.

503 Stock BHP
590 Stage 1 BHP
650+ Stage 3 Ceiling
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BMW M3 G80/G81
Performance Stages

S58 Tuning Stages

All power figures are average estimates based on typical results. Actual gains depend on vehicle condition, fuel quality and supporting modifications.

01

Stage 1

550-590 bhp

Software only. No hardware changes required. Custom ECU calibration on fully standard engine.

  • Custom map written in-house
  • No additional parts needed
  • Fully reversible
02

Stage 2

600-640 bhp

Calibrated for bolt-on modifications. Downpipe, intake and supporting hardware.

  • Requires supporting hardware
  • Mapped to your specific mods
  • Data-logged and validated
03

Stage 3

650+ bhp

Full custom calibration for serious builds. Hybrid turbos, uprated fuelling and bespoke mapping.

  • Hybrid or upgraded turbo
  • Uprated fuel system
  • Bespoke build calibration

Ready to Tune Your M3?

Get in touch to discuss your build. Every map is written in-house and tailored to your car.

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