been having some issues with backfiring as soon as i try to even get on the car a little bit. car has a sumped tank, magnafuel pro tuner 625, -8 feed lines splitting into fuel rails. then goes into areomotive regulator and back into tank. has 2 summit racing fuel filter on the car before and one after. this problem was there before i instaleld the tank and magnafuel pump. this is an all new combo. im cuirous if its possible a fuel filter is clogged or backwards or can the regulator be bad?