Knock with stock tune at WOT.

[curry67]

I recently tuned my sho and saw the knock reading was quite back and it was pulling alot of timing. I thought it was a fuel issue so i changed to a few different gas types. I originally was running 94 octane with 10% ethanol and found i get the worst knock on this gas. both stock and tuned i tried a few 91s and it got a little better but never went away. I went back to stock after this and saw knock go down considerably (1.5-4) instead of (5-6.5). Recently tried the 94 octane stock and see spikes of 6.5 at WOT. I had to go on a long roadtrip and noticed i was having spark blowout on the plugs so i got them replaced at my destination. Im not sure what else to do. Im starting to think its a ton of carbon build up.

[ecoboostsho]

How many miles are on your car? Have fixed your knock sensor wires (there is a how to)? What are you using to measure the knock?

[SHOdded]

What was the gap on the new spark plugs?  Set to 0.028 or 0.030, I hope?

[curry67]

I got it done at ford dealer as it was kinda of a pinch. I'm dropping car off at dealer Tuesday for drivers side blend door, massaging seats, old dark stain on top of ptu.  My ac has been acting up but it's not all the time so they probably won't even diagnose that. My battery is also not looking to good and probably needs to be replaced.

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[curry67]

How many miles are on your car? Have fixed your knock sensor wires (there is a how to)? What are you using to measure the knock?

no I'll have to check that out. Never could see the knock before. I'm using a sct x4 with Torrie config file for dataloging. 94000 km so I guess 60 k miles almost . Had all the driveline fluids replaced about 15 k ago. Always used 91+. Did buy the car used though.

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[curry67]

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[SHOdded]

Hope someone can chime in with the differences in datalogging between the SCT X3 and X4, but here is a basic writeup on how to do it with the X3:
http://www.mustangevolution.com/mustang-articles/how-to-data-log-your-vehicle-with-an-sct-x-cal3/
http://www.ecoboostperformanceforum.com/index.php?topic=788.0

A howto for the X4 written by Bama Performance:
https://support.bamaperformance.com/hc/en-us/articles/202545589-How-to-Datalog-with-the-Bama-SCT-X4-SF4
More useful info on their site, if you want to dig deeper.

Fuel trims are commonly abbreviated as STFT (shorttermfueltrim) and LTFT (longtermfueltrim).  Bank1 will be STFT1 and bank2 will be STFT2 for instance.

You should get comfy with logging with the X4, but if you can't, I think Forscan on iDevice or Torque Pro on Android is a great way to go.  Very easy to use.  You WILL need a WiFi OBD adapter with the iDevice (such as the VGATE) or WiFi/Bluetooth adapter with the Android (such as VGATE, OBDLink MX, etc).

Plug gaps need to be changed to 0.030 or 0.028, whatever Torrie recommends.  Otherwise you will likely be running too lean for the tune, creating conditions for a knock.  You might get away using 94 octane fuel with stock plug gap & 87 tune, but not a 93 tune + stock gap + 94 fuel.  Basically you are using higheroctane fuel to fudge for improper plug gap, at best a temporary measure.

[glock-coma]

I was having kr issues until I started blending a little e85 in with 93.  I would definitely check you knock wiring, its right below the tstat housing and is easily cut  on the edge of the engine block. 
6.5 on wot is no Bueno

[BiGMaC]

I was having kr issues until I started blending a little e85 in with 93.  I would definitely check you knock wiring, its right below the tstat housing and is easily cut  on the edge of the engine block. 
6.5 on wot is no Bueno

Agree on the wiring!
Since adding EtOH to the fuel increases effective octane I think you have to view it as a temporary workaround measure only.  I'd recommend fix the problem.... Then if if you want to use an ethanol blend you can tune to take advantage of the higher octane by adding more timing, tune or ECM.

[curry67]

are these the wires?

[BiGMaC]

Not sure from the pic. Also, remember that the KR sensor is a microphone, so other loose objects could possibly fool the sensor.... That said it is a quick fix and here's a link to the post with pics:
http://www.ecoboostperformanceforum.com/index.php/topic,554.msg3496.html#msg3496

[glock-coma]

are these the wires?

That looks like them. 4 wires total. 2 for each knock sensor.

2010 RCM non PP
K&N panel filter with aux hose
RX OCC with CSS
sp534 @ 30
unleashed tune 12.90@106

[curry67]

Do i just wrap the yellow part in electrical tape and zip ty to that black thing beside it? If that's all 4 knock sensor wires I bet this is my issue.

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[glock-coma]

The black hose with the yellow tape is a vacuum hose I believe. The white and black wires are the ones your looking for. You can see them in the pic.  they're covered about 2" down in a rubber sleeve.  The exposed part is what your worried about. 

[FoMoCoSHO]

I just realized if you are seeing KR during shifts, that could be torque management.

I also just realized that is the only time I see KR so......derp.