The connectors have no function on your engine. They are needed for the 330i. Your engine does not have a dipstick. Whether or not under-bonnet insulation is fitted seems to vary with the geographic market. I have it on my 325i. You can always retro fit it...
E92 pre-LCI 325i
- Ohlins R&T; H&R spacers; 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; SSDD carbon diffuser; Monster Wrap black roof