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; M3 strut brace; Meyle HD droplinks and top mounts; Swift thrust sheets; BMS clutch stop; BMS CDV; RE g/box mounts; Saikoumichi OCC; K&N; Cyba scoops; B A diff brace; BMW Perf Exhaust; M3 rear spoiler; M3 white dash LEDs; LED Angels; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof