I got the car back last night from renault after taking it in to check it over as i can hear a ticking noise (quite faint but i can still hear it) just under the revs when you go over about 2k revs. Their mechanic said he cudnt hear it and nothing on diagnostic machine, but he says it could be injectors and told me to try using v power fuel. Anyone got any ideas what it could be are is it just me.