I have a problem with my stock civic i think it has a fuel problem! because when the fuel tank is 1/2 and lower on certain times my car starts to lose power "like out of fuel",, it starts from half tank and so on,, when the tank is full there is no problem also below half tank when i take hard turns it does the same.... i replaced the gas pump for a new one "honda" because the old one died! any especific details to check? tha fuel tank? fuel pump? i dont know,, what do you guys think?

 

try driving around with the gas level low and with the gas cap off. The tank might be building up pressure..

Or it might be the install of the pump...

 

i dont think that the install is the problem... im gonna try driving it low with the gas cap off... thanks!!