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**Update**
Well, I have done a few more things to address the issue. I sent my injectors to Witchhunter and one came back bad. I have replaced the bad one with a refurb injector. I also have replaced the original AFM with a refurb one. In addition, I identified a hole in my exhaust manifold. I have also replaced that with a good used manifold. I have also shimmed my wastegate.
Unfortunately, the issue still persists. Things that I have noticed: I installed a fuel pressure gauge on the rail. When idling the pressure is around 32psi. When I manually rev the engine from the throttle body, the pressure fluctuates up to 40psi with the higher revs. I don't know if that is normal or not.
The issue is very consistent. Right around 5000rpm in 3rd gear, it feels like the timing is retarded causing the car to drop horsepower. I don't think that it is an overboost issue as my aftermarket boost gauge shows a max of 12 - 13psi. In addition, once the issue happens, if I lift off the gas and then apply gas, the car bucks and sputters. Once I come to a stop, the car dies and needs to be restarted. Once restarted it drives fine again.
At this point, I almost have replaced everything in the car. The only things that I have not replaced are the fuel pump, fuel dampner and BOV.
My thought is perhaps chipping the car might fix the issue. Can anyone explain what happens when a fuel pump starts going? Does anyone think the BOV might make a difference?
I really appreciate any input. I have to be close to addressing the issue, as I almost have a brand new car.
thanks Doug
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