Sometimes my turbos come in and sometimes it don't. Whats going on. When I start the car and go if the turbos don't come on, chances are the turbos won't come on as long as I run the car. If I stop and shut the engine off and turn it back on. 50% chance the turbos work. My pattern is 11-5-6. If the turbos are working and I full boost it for about 2 seconds, doesn't have to be to redline. The turbos will not come on in the next gear. If I play with the boost and boost it only 6-9 psi it will come on the next gear. Could this be and ecu problem, or a wiring harness problem. Someone please help