BMW 340i (B58)
All work
ECU RemappingApril 2026

Stage 2 — Big Gains, Daily Driveable

BMW 340i (B58)

Stage 2 custom map with downpipe. Transformed throttle response and a huge mid-range surge while keeping it smooth for daily use.

Owner wanted serious performance without sacrificing reliability. We fitted a catless downpipe and developed a custom Stage 2 calibration on the rolling road, dialling in fuelling and boost for strong, linear delivery. The result is a daily-driveable car that pulls hard all the way to the redline.

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