Wiring plug

Spotted this wiring plug hanging down under the injector rail. Before I go wildly dismantling the bike does anybody know what it's for? If I were to guess I'd say it should be connected to possibly the air injection system, the bike does pop and bang on the over run quite a bit. Cheers.

 

Thanks. Checked with a pal who has the same model and his is the same so you got it spot on biglad