i dint use my 750 for 2 weeks ,when i wanted to use it the batterie was dead so i did a jump start with a smaller car with a smaller batterie an also didn't switch on the lights en now the car doesn't drive that good,it has a poor aceleration and doesnt drive so fast.any ideas ?????? i also build a phone in my car for that i had to open some parts of the dash,is it posible that i hit some control module of the engine ???