Thanks Vicks I ask for fuel pump specs and the chinese feed me with whatever they have in hand. I start leaning to the possibility of using a 3bar fuel pump, as long as it draws close to 3,2Amps. I think I saw such a pump. I think It is worth it even if the dia=30mm. I am contacting suppliers that say they can upgrade fuel pressure to 3,5bar on items they quote at 3.0bars. Cheers.