Power Loss 2013 GT500

[LooseCannon]

So after a night of racing the next day my car has some major power loss. It usually maxes out around 19 psi of boost, now it only gets to about 14. I have changed the plugs (TR7) and have also changed the boost bypass actuator. My thought was that maybe the diagram got messed up and wasn't closing the bypass valve. But that doesn't seam to be it at all.

So my next assumption is that the computer is limiting me. So I data logged the "Toque source" hoping it would shed some light and it didn't I'm not sure where to go from here. (Data Log is Attached)

I'v been driving it around like this for about a month now. It drives perfect. AFR stays on stioch.

Any help would be appreciated.

Mods in sig.

[LooseCannon]

Notice the KR. its only at the very instance that happens. Its also weird that its negative. I'm assuming its not real knock and the computer is doing that to pull back timing?

[redline5.0]

Notice the KR. its only at the very instance that happens. Its also weird that its negative. I'm assuming its not real knock and the computer is doing that to pull back timing?

Negative knock normally means its adding timing at least on the 5.0's

[SultanHassanMasTuning]

thats not knock, you need to clean up your fuel trims.

any change your belt is slipping?

[MikeOD]

I was going to ask if there's any chance your belt is slipping also.

[LooseCannon]

i originally thought the belt was slipping also. So i put it on the dyno and the belt is not slipping. Only made 375 hp should be around 680.

[LooseCannon]

In this video its hard to see, but it only makes around 13 psi. should be around 18-19.

[LooseCannon]

thats not knock, you need to clean up your fuel trims.

any change your belt is slipping?

I will clean up the fuel trims as soon as i get this problem sorted out. I'm still learning this Ford stuff, it seams as soon as i learned how to tune the GM stuff i jumped ship, and bought a Ford.

[SultanHassanMasTuning]

13 psi should not be only making 375HP, there is another problem going on...

In this video its hard to see, but it only makes around 13 psi. should be around 18-19.

[MikeOD]

13 PSI when there should be 18-19 is not going to be the difference from 680 to 375 hp. Something else is wrong.

[LooseCannon]

digging through GT500 threads on HPTuners I realized I forgot to post how I resolved this issue. I ended up turning all of the nannies off as in 100% off, there a couple of different modes in this car. But in the owners manual it tells you how to turn them all off. Once I did that I did a pull and it made the correct amount of boost, and pulled very hard. Once i turned the nannies back on everythings was fine. I'm think what happened was the one of the speed sensors was acting up and the car thought it was in an uncontrolled slide 100% of the time and was limiting power. This is never happend again to me with this car.