Is that the top butterflies or bottom butterflies? We run with our top ones closer to breather removed. But I did order a new TB last night.Need a new tb assembly. Can't replace.
Engine won't run without it (or won't run worth a s#!t even if it does) because secondary butterflies are fully closed in their "off" position.
You can remove the flaps. Engine will run fine if they're gone completely. Will throw a code but won't limp mode.