I have a 97 H22a4 in a 00si. The problem I'm having is that whenever I fuel the car wont start right away. i have to wait awhile for the fuel system to prime. The car has a AEM fuel rail, a AEM fuel regulator a high flow fuel pump and stock injectors. I running a P28 ecu with a JDMShit chip with a OBD1 convertor harness. What could be the problem. Any help would be appreciated.