I had the extra Supra fuel pump installed with an HKS Fuel rail and 720 cc injectors, VPC chip and fuel pressure regulator and I have hell in the morning with startup. The car has to be cranked at least 7 times to "catch" and then it puffs dark smoke until it clears itself up. Once the car is warm it's okay except for the fact that at least one time per day I would be driving down the road and the car just cuts off. I will start it while coasting and then everything would be fine. What could this be?