They were putting it on the dyno to start tuning it and they started to hear a noise coming from the valvecover so they turned it off and started tearing it down. Heads are perfect, everything is perfect except for cylinder #4. They are going to have the injectors tested to see what the problem is. Eric had said it was like it washed a cylinder down and then then bye bye so they are rush ordering a new piston for me and covering it which is extremely nice of them. I have to say that through everything they have been excellent with communication and letting me know what was going on ever wince they have the car.