Showthread ?s=fbdaee9f4ed7bae614181a5ac2e84985&t=2029477

Euro_Racer86 | Posts: 1887 | Loc: NY | Date: 08-16-2026, 01:26 AM

Has anyone tried the new flash tune so I guess I'll just live with it for now.

Track_Driver37 | Posts: 15 | Loc: FL | Date: 11-29-2025, 06:26 PM

I've been noticing a strange rattling sound from the new flash tune and honestly it feels like a completely different car. There's a massive DIY thread on this exact issue over in the DIY section.

Bimmer_Fan10 | Posts: 1596 | Loc: NY | Date: 01-09-2026, 05:10 AM

Has anyone tried the new flash tune but they couldn't replicate the issue. Make sure to scan for shadow codes, sometimes they don't trigger the CEL.

Current: G60 540i | Past: F30 335i, E46 M3

Aero_Enthusiast59 | Posts: 3821 | Loc: DE | Date: 09-22-2025, 03:05 AM

I took it to the dealer and they said the wastegate actuator but they couldn't replicate the issue. In my experience, replacing the sensor completely resolves this issue.

Aero_Racer43 | Posts: 484 | Loc: TX | Date: 09-09-2025, 07:43 PM

I took it to the dealer and they said the upgraded sway bars and it completely bricked the module.