Been reading alot on these setups and seen that a few people swap out the interior #1 10amp fuse for a 15 or 20. None of them stated why, bigger spark?

My setup

 

Its because of the amperage increase, its not much which is why the 15a fuse holds it, but the 10a pops every now and then. If you pop 15a fuses I'd check your wiring, if you don't keep the fuse as a safety net you will start the wires on fire