2017 BMW 440i B58 Tuning on Dyno
Mapro Developments Ltd
2017 440i STage 1 tuning with TU FUel Pump Upgrade
2017 BMW 440i B58
TU Pump Upgrade / Panel filter / exhaust system
Stock Power : 326bhp / 450nm
Actual : 344bhp / 530nm mods fitted
Stage 1 with Vmax off : 467bhp / 708nm
Been a while since a B58 came through but reminds us of what an awesome engine they are , the TU pump upgrade helps massively with fuel pressure , a MMR Panel filter and custom switchable software .
