[Christ]

Stopping the AIP from spinning is the only viable fuel saving option. Plugging the holes does nothing but cause it to fight itself until it grenades eventually because it's constantly pushing against a dead wall and building internal pressure while the engine is running.

It probably would have been easier instead of changing all that stuff to just get yourself an idler pulley to replace the pump. You can also remove the internals of the pumps on some models, and that just leaves a couple bearings and a shaft to spin inside the housing. Still eats a little power, but it's better than pushing useless air. You can retune the EFI system to keep the cat active easily enough, too.