air induction system

Hey guys, this is my fist time posting. I have been busy in the garage getting my newly bought(used but new to me) Fz6 looking right. Here are some before and afters. I will also be syncing my throttle bodies soon :) The Mods I have done include Two Brothers dual aluminum cans, juice box...

Basically, how hard/important is this (by the service manual) check? I usually do all of my own service checks but this one I feel uncomfortable - looks like I have to take stuff apart by the service manual. Unless I'm reading into the owners manual incorrectly, can I only do a visual check...