After about 30 to 40 secs while the car is running it boggs and looses power, i've tried changing the fuel pump(twice) checking all ground wires and pinch wiring. finally took it to the dealer and they cleaned my injectors, and flashed and re programmed my ecu, and they tested all my sensors. they even also did a induction cleaning, but the problem still persist. when im driving and it start loosing power and what not, i shut off the engine wait about 3 secs, and start it up again its fine until about 30 to 40 secs within driving.. i took off the fuel filter and blew through it, it seems fine, very little resists when blowing through it.. need help please