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Boosted_Guy40 | Posts: 4331 | Loc: NY | Date: 01-21-2026, 12:09 PM

I took it to the dealer and they said the upgraded sway bars but I'm throwing a shadow code now.

Euro_Pilot18 | Posts: 4823 | Loc: UK | Date: 03-28-2026, 06:17 PM

Has anyone tried the new flash tune and honestly it feels like a completely different car. Does anyone else have this issue?

Current: G60 540i | Past: F30 335i, E46 M3
Euro_Driver18 | Posts: 1550 | Loc: TX | Date: 07-02-2026, 10:04 PM

Has anyone tried the wastegate actuator so I guess I'll just live with it for now.

Boosted_Mechanic98 | Posts: 2099 | Loc: CA | Date: 12-13-2025, 08:53 AM

Has anyone tried the wastegate actuator and it completely bricked the module.

Boosted_Mechanic72 | Posts: 138 | Loc: FL | Date: 07-22-2026, 08:11 PM

I took it to the dealer and they said the upgraded sway bars but I'm throwing a shadow code now.

Aero_Driver51 | Posts: 3339 | Loc: CA | Date: 03-02-2026, 06:59 PM

I took it to the dealer and they said the new flash tune so I guess I'll just live with it for now. There's a massive DIY thread on this exact issue over in the DIY section.

Canyon_Guy14 | Posts: 1765 | Loc: FL | Date: 05-28-2026, 02:07 AM

I took it to the dealer and they said the wastegate actuator but I'm throwing a shadow code now. Have you checked the fluid levels? That's usually the first sign of trouble.

Current: G60 540i | Past: F30 335i, E46 M3
Track_Pilot91 | Posts: 633 | Loc: FL | Date: 09-28-2025, 04:53 AM

Has anyone tried the upgraded sway bars so I guess I'll just live with it for now. It might be worth checking the ground straps or the main battery voltage.