My car has a little hessition from time to time, but the main problem is everyonce and awhile I will turn the car off and when I go to restart it(5-10 after sitting), it wont start. It just cranks and doesn't catch...I can give it a little gas and it will start after about 15 sec. I think this started after I installed a AEM FPR & OBD 1 ecu. My FPR is set at 51 vaccum off. Anyone have any ideas?