I seem to recall they are related to the operation of the two- (or is it three-?) stage inlet manifold only fitted to the 330i.
Originally Posted by jpt
Phil325i, what do the connectors do on the 330? Wouldn't it have saved BMW a euro or two to delete them if they're useless on my car?
E92 pre-LCI 325i
- Ohlins R&T; H&R spacers; M3 strut brace; Meyle HD droplinks; BMS clutch stop; BMS CDV; RE g/box mounts; Saikoumichi OCC; K&N; Cyba scoops; BMW Perf Exhaust; M3 rear spoiler; LED Angels; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof