What exactly is feeling lethargic? Shifts? Acceleration? Throttle response? I've never reset the throttle body even once and the car is as zippy as ever.
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2015 BMW 535xi
Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets
ISTA VM Setup/Tutorial
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