Had this prob. last week the bike kept giving me an FI code for the #4 Stick coil, changed the coil to no avail, unhooked Ignition Module and Power Commander still no change. Went as far as to change the spark plug In that cyl ,no go! Off to the Mech! after testing wire's from the stick coil back, he finally got to the ECU plug's and there found the black with orange stripe(#4 stick coil wire) hanging by about two strand's of copper. Also about a dozen other's showing copper as well. As It turn's out the plastic tray the the ECU sit's In has two piece's of plastic the wire's go over and prob. hit at every bump In turn yanking on the Harness, Now keep In mind my 08 ZX10 has 112.000 Km's on It and there are really no easy Km's. Just like to share this with all the other 08/09/10 ZX10 owner's out there might help somebody! (Oh and I replaced the whole harness for piece of mind) 600 km's so far so good!