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flex‑fuel
and intake upgrades
2000–2004 E39 525i / 530i — M54
Air/load model
0i (M52TU/M54)
BMW N54 OTS Map Pack E39 flex‑fuelUnlock the full potential of your BMW N54 twin turbo inline six with our dyno tested ECU calibrations. Each stage is designed to provide optimal power gains while maintaining reliability, with maps available for 91, 93, 95 pump gas and ethanol blends (E30, E50, E85). These tunes are meant to be flashed via MHD, or through the BimmerTuningTools N54 Quickflash. Stage 1 Tune 91 93 95 Octane (Stock Car Friendly) Power Output: ~380 HP 390 lb ft (530 Nm)
US$ 11.95
US$ 21.00
US$ 12.95
US$ 13.00
US$ 12.50