I had a problem with my fuel system, I found out that it was the computer. a friend from the dealer said I could ground the fuel pump relay. This would allow the car to run and it did. My check engine light just recently came on. When I was trying to accerate the turbo kicked in and a large amount of black smoke came out. The car then had a total loss of power, it seemed to get better after around 5 miles. The car seems hesitate and still blows smoke when I get into turbo. Any suggestions to help fix the problem would be greatly appreciated.