Thanks folks. I bought the bike with a non standard exhaust and it was one of those times where I was looking over the bike thinking what an earth are these cables for and as soon as someone said exup valve it made perfect sense. The cables came out no problem.

Hi All, towards the end of last year I picked up a yellow and black 2011 FZ1 N. Not had it out much over the winter but yesterday I gave it a service in preparation for using it in the coming weeks but I already know I love it! I was having a look around it and noticed two loose cables tracing back to a wee box between the tank and the battery...might be a totally stupid question but what are they for? I attached a photo of the box/cables in question!