The Back In Time Equipped Glitch (BiTE) is a trick that allows you to warp to the first King Bulblin Fight like the Back in Time Glitch, but allows you to use the items obtained from another save file.
It's important to note that the success of the Back in Time Equipped Glitch depends on the the map and the objects that load when the save file is RESTORED. This is because the game is trying to load two different maps at the same time.
After getting the iron boots, save in Mayor Bo's House. Go to the Ordon Ranch, and immediately after Link stops moving, turn around and use a Long Jump to get over the loading zone. From here, roll about 3 times and do BiTE. This will automatically warp you to the King Bulblin battle. Obviously this faster spot for BiTE can't be done on the Wii Version, so instead, BiTE would be done from the bridge to the Faron Woods for the Wii.
There is a set-up that uses shield bash after the LJA over the loading zone which can be buffer and hence a good alternative. To do this stand just before a white spot on the wall shown in the video which is near the edge of the physical ground, then line up your first heart between the two poles, finally press R and D-Right at the same time to buffer the shield bash, now zoom out once and then press X-Start-B (With B being the last button)