The noise is your throttle body, mine does it too. Unplug the large black wiring harness connector and plug it back in, the sound will go away until you start the car next time.
I should mention unplugging the harness while it's on will throw 2 codes. Just clear them.
2006 Lotus Exige: Avery Matte Graphite wrap, partial built motor (9:1 Mahle pistons, Ferrea Competition valves, ACT Clutch, ARP head studs), REV400, Nitron SAs, BOE QS exhaust, Ultradisc rotors, Moroso Oil pan, Circuitworks oil pump, CF Stuff (Cup Roof, ReVerie diffusor, side scoops, APR air dam, craftsquare mirrors), Worksbell quick release, Odyssey PC625, Morimoto Xenon HID, BOE Rear Oil Cooler, Difflow Aeroplates, BOE Swirl Pot, DaviesCraig EWP, Reversed Heater Matrix
Last edited by mwehnes; 07-12-2019 at 05:33 PM.
Reason: Added the bit about throwing codes