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Old 05-04-2012, 03:51 PM   #101
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Its normal for almost every stock vehicle
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Old 05-04-2012, 04:10 PM   #102
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Originally Posted by Ox-y-GenIII View Post
I don't think an intake or exhaust void Fords warranty so I'm not worrying about it.
It will if it was the cause of the failure, but they would have to prove that, so yeah it should be fine. and tuning will be available eventually and solve the problem.

Normal driving probably wont be a problem, but lean means more heat for the engine.
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Old 05-04-2012, 04:25 PM   #103
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Would running 91/93 octane help because that should allow a leaner a/f without causing problems
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Old 05-04-2012, 04:37 PM   #104
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Originally Posted by 1turbofocus View Post
It isnt the time delay to WOT fuel (openloop) that is causing that , it is actually set that lean in the tuning from ford and in my opinion it is WORNG but I know why there doing it and for a grocery getter its fine , intake causes a leaner condition

All that would have to be done with an intake is see the engine is lean stock and slightly larger maf hole to richen it up , this would keep the engine safe , make more power...

Yes I have had about 10 2012 on my dyno they were all lean
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Originally Posted by 1turbofocus View Post
The front o2 is not used for WOT fueling

Tom
WTH?

1) Why would the front O2 not be used during WOT? I have never seen my car go open loop @ WOT.

2) I am getting a steady 12.4~12.5 (commanded and actual) AFR @ WOT.

Could this be attributed to PCM calibration differences or...?
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Old 05-04-2012, 04:40 PM   #105
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What are you using to log?
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Old 05-04-2012, 05:03 PM   #106
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Originally Posted by darkangelism View Post
Would running 91/93 octane help because that should allow a leaner a/f without causing problems
That would only happen if you were experiencing KR. If you arent then higher octane wont effect anything. It definatly wouldnt hurt though.
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Old 05-04-2012, 05:03 PM   #107
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What are you using to log?
For direct monitoring, I have my own "black box" (similar in function to a DashHawk) that I developed a few years ago. It now has most of the 2012 Focus specific (mode 22) PID's.

For data logging, I use a PC with a Drewtech Mongoose (J2534) CAN interface and custom software.

I also have an IDS (which can do datalogging) as a reference.

Here is an example of a datalog (showing operation of the grill shutters) that I previously posted:




FWIW, I will post a WOT datalog tonight.
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Old 05-04-2012, 06:20 PM   #108
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so is my steeda intake going to destroy my engine?
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Old 05-04-2012, 06:34 PM   #109
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Quote:
Originally Posted by Kabigon View Post
For direct monitoring, I have my own "black box" (similar in function to a DashHawk) that I developed a few years ago. It now has most of the 2012 Focus specific (mode 22) PID's.

For data logging, I use a PC with a Drewtech Mongoose (J2534) CAN interface and custom software.

I also have an IDS (which can do datalogging) as a reference.

Here is an example of a datalog (showing operation of the grill shutters) that I previously posted:




FWIW, I will post a WOT datalog tonight.

CSV format please.
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Old 05-04-2012, 07:06 PM   #110
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Quote:
Originally Posted by Duffman355 View Post
so is my steeda intake going to destroy my engine?
while i am not as much of an expert as the others, under normal driving conditions, it is doubtful you will damage your engine. Running lean means that the engine runs hotter, which could lead to detonation of the fuel, causing you to blow or melt the engine, but you have to be pushing the engine to where it is running hot enough for that to happen, which would be hard driving conditions and not daily driving.

If the cars are running lean from the factory, we are losing HP because less fuel is being delivered and tuning would help this.
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