Defo give the starter a tap or 2,or another way is to put the car into gear,handbrake off (unless on a hill,lol) then get out and rock the car back and forth a few times,that usually releases it too :)
Welcome to BMWOC :) Try an air induction cone,s/steel exhaust,and a remap...job done !! oh and maybe lower it :) p.s. I hate the word/term CHAV being used for car modifiers !!