PiModulos is supposed to be a modular EHX Big Muff Pi PCB that can implement as many versions of the transistor BMP circuit. So far two schematics have been created, one is for a triangle era muff they other is for a Skreddy Mayonaise, it has altered values and a midrange switch added. Also this PCB has pads for a few popular mods. The emitter mod, consists of bypassing the resistors to ground from the transistors, this can be implemented as a switchable feature. the result is a boost in mid range and gain/fuzz. The other mod is the skreddy tone switch mod that adds another cap in parallel with the one int he filter of the tone circuit, this gives a boost in midrange.