2010 SHO. Detonation... maybe

Dealer has finally called and told me that car is ready to go. Conveniently it has also snowed making the attempt to reproduce the sound difficult.
SA says that the mechanics and engineers believe that it is a fuel line rattling on the car. They also replaced an O2 sensor and say that was the cause of the loss of power.
As it sits I will collect car on Saturday. Will road test again, get it home and insulate the lines to prevent any chassis contact.
At this point I am skeptical of the report. But, I also should trust what they say at this point, as I have no reason to believe otherwise.
 
I am still very skeptical of the diagnosis. I could see if it was a short rattle, but I've had it produce the sound for seconds at a time. I feel they are using this as a scapegoat to get it out the door to get me out of their hair and run my warranty out. I'm pretty convinced the car will be going back next week. I desperately hope I'm wrong.
They also claimed this was a normal sound, however in my searches I've yet to find another with a similar problem.
 
Apparently there's been on the entire time. Even when I called Ford Canada they knew about it. So I'm not sure what to think currently. Will wait and see.
Can't get to excited just yet. Will ensure its not fuel lines and go from there.
 
Talked to the service manager and also have the opportunity to sit down with them and go over everything they did to the car.
They had the chassis ears on and can confirm it is the fuel lines, not hitting the chassis but more of a pressure wave/ cavitation. Checked around and found a few other examples on the net when dealing with high pressure fuel systems. Biggest question now is how do I fix it.

Will take the car out tonight and datalog it again. Should have file on here in an hour or two.
 
Noise is still present. At this point I'm chasing my tail, so for now I'll let it be. Car is running perfectly. No skips, bobs or anything. Pulls like a freight train.
If noise gets worse I'll probably head to a third party performance shop and see what happens there.
Only numbers that get wonky that I can see is the short term fuel trim, this occurs when the KR hits 7, just the one bank. 
Heres the data log.
 
Didn't notice in your post but are you tuned?
Your data log shows 24psi manifold pressure. Can that be right? That's crazy high.

Edit: just noticed at one point it shows 26.97


2010 RCM non PP
K&N panel filter
sp534 @ 30
unleashed 93 performance+boost 3bar
more to come.....
 
Does it show knock under heavy load like in 5/6th gear at lower rpm ? 1600-1900 range
Or ONLY at high rpm.

2010 RCM non PP
K&N panel filter
sp534 @ 30
unleashed 93 performance+boost 3bar
more to come.....

 
Puzzling why O2 Bank1 pre-cat is seeing such high voltages (excessively rich; never seen over 1.0 readings) after a WOT, while both post-cat sensors take a c*** at the same time.  Please add the Bank 2 sensor 1 voltage for the next datalog :)  The car was warmed up (190F), so it should not be running near 1.0V at low/part throttle.

How is the mpg looking?
 
Mileage is good, close to advertised.  23-26 depending on the day. Last time I noticed about 9L/100 km or 26MPG, in town its 15MPG with some idle time due to frosted windows.
Will log here again shortly.


 
Didn't have a PID for sensor 1 voltage. Just one PID for the sensor one equivalence.

Noticed manifold pressure hit 29PSI, if the sensor was no good could this cause me issues?
Heres a longer CSV, some driveway idle time etc.

 
I was looking around the 'net and found this short blurb on how wideband sensors work:
http://www.koiautoparts.com/professionals/articles/032811_wideband_02_sensors.pdf

Need to dig up info on the Ford-OEM WB sensor reference voltages.  But from my understanding, the lower the voltage compared to the reference voltage the PCM sends, the richer the A/F mix, and vice versa.  Conventional O2 sensors usually range 0.1 to 0.9V, with 0.45V or so being stoich.

The intake manifold pressure is likely "absolute" pressure, and you would subtract 14.7 to get vacuum/boost pressure.  That still would mean your SHO is hitting 15 psi or so of max boost.  Seems a bit high for a stock tune, and esp so with a 2 bar MAP.  A 3 bar MAP would give you more accurate data at that boost level, but then you'd need a tune to go with.

Are you using Torque, or Torque Pro?  Strange it would not give you a PID for Bank 2 Sensor 1 O2.
 
Using torque pro but haven't read to many good things about it. Almost wonder if a proper tune would help car out. Have tracked down a few dyno shops and hoping to visit them in the new year. See what they think of the sound/ benchmark car.
 
There are a couple of known issues with the fuel system, including fuel injector & HPFP lines.  Fuel injector issues are turning out to be more common than thought.  Don't know if that helps any, hope it does.
 
Was there with them today. They are very positive that is a pressure wave in fuel system. Actually heard it through the floor behind me on passenger side. What makes mine strange is the volume of it. They had also suggested, not directly but that tuning it could possibly help reduce the sound. Syncing pump up better etc.
Met the tech who played with it also and also mentioned that there's no sign of detonation.
Fuel supply line is the one making all the noise. I'm not exactly certain what to do from here. Car is otherwise running fine. I'm tempted to just run it till it blows, if it does.
 
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