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Software changes to alow for Secondary Air pump removal
Necessary Hardware upgrades for Stage 2 are:
which doesn't have to be the case
Exhaust Valve Always Open
WOT shiftpoints are changed to keep the M57 engine in the optimal torque range during acceleration
BMW 335i N54 E90/E91/E92/E93 Tuning xHP Gearbox Tuning:Stage 1 Software changes to alow forEngine Tuning Stage 1 TRS Engine Tune STG 1 Power increased to 380 400BHP and 600NM of torque when using 99 RON fuel. Dyno graph featured shows car tuned on 95 RON fuel *Power figures are climate, fuel quality and vehicle dependant, earlier cars using numatic wastegate control will typically make 15HP less than the later electronic waste gate cars. *Power figures are real figures we have seen on our dyno, these numbers are sometimes less than seen on
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