Won't cause you any problems if you bundle the excess. Mine is folded over in a bundle about 1" long and shrink wrapped. You could also shorten the wire if you have the tools, but you will be limiting that gyro to similiar sized helis. I'm leaving mine long so that if the gyro in my raptor goes out I can swap it out if I need to fly the raptor. You need the extra lenght for the bigger helis.
Oh BTW, make sure the bundled wire is tied down so it can't get caught in anything.