thanks for the reply wildthing

it hiccups at low rpm but when above 2000 everything's fine another thing naman is when I downshift from 3500 to overtake there is hesitation like it runs out of gas or is nasasakal but when I rev it like the way the bus drivers do when they shift, it doesn't happen.

they are all equalized naman coz I have a flow meter and the timing is advanced maximum. I also have an electric fuel pump and regulator set at 5. thanks.