Also following, seeing as I am now a 1st time ciao owner.... a super clean euro model with oil injection. Mine came with a mystery circuit, but I've never liked circuits on anything simply because of their sound.
My plan is to run it stock for little with the circuit, then swap for one of the above mentioned pipes, probably the gianelli stock if I can find one. Then, slap a malossi 43mm on it and see how it does.