Just got my 2013 5.0
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Joined: December 14, 2007
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From: State of Jefferson Mountains USA
that is true, I unfortunately learned that from experience. I had a corvette once and added a CIA and full exhaust. driving down the road and for whatever reason (stress, me, etc.) I threw a piston out. The dealer told me sorry but not our problem since I had it tuned. Cost me 7K to get it fixed. I swore I would not void a factory warranty again unless I really could afford to fix anything and everything out of pocket. Not saying not to mod or anything, just sharing my experience.
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From: Austin
Bullitt Member
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From: Fort Worth Texas
I agree 100%, but from the dealer point of view, I changed the mapping and modified part of the car, so that voided the warranty completely.
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Shelby GT500 Member
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From: Kansas City
You car has a wideband built in (instead of the narrow bands used in previous model years). You can access these values using PID 0124. Its reported back in lambda which then is converted to AFR. 12.5:1 isn't a terrible AFR. Pre 11' cars typically were ran at 13:1 AFR.
12.5:1 should not cause any engine failure, unless, you have poor quality gas and way too much timing. ...
Second note, the newer age knock sensors used in our year mustangs are very good at preventing detonation. This, however, is as long as your tuner hasn't changed any settings pertaining to that particular system (specifically the Retard Rate. Most dealers will set it to 1 full degree of revolution which is fuc.. well not wise).
#8 failure caused by 80% heat/timing.
What kind of tuner do you have? SCT?
12.5:1 should not cause any engine failure, unless, you have poor quality gas and way too much timing. ...
Second note, the newer age knock sensors used in our year mustangs are very good at preventing detonation. This, however, is as long as your tuner hasn't changed any settings pertaining to that particular system (specifically the Retard Rate. Most dealers will set it to 1 full degree of revolution which is fuc.. well not wise).
#8 failure caused by 80% heat/timing.
What kind of tuner do you have? SCT?
Shelby GT500 Member
Joined: November 26, 2011
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You car has a wideband built in (instead of the narrow bands used in previous model years). You can access these values using PID 0124. Its reported back in lambda which then is converted to AFR. 12.5:1 isn't a terrible AFR. Pre 11' cars typically were ran at 13:1 AFR.
12.5:1 should not cause any engine failure, unless, you have poor quality gas and way too much timing. ...
Second note, the newer age knock sensors used in our year mustangs are very good at preventing detonation. This, however, is as long as your tuner hasn't changed any settings pertaining to that particular system (specifically the Retard Rate. Most dealers will set it to 1 full degree of revolution which is fuc.. well not wise).
#8 failure caused by 80% heat/timing.
What kind of tuner do you have? SCT?
12.5:1 should not cause any engine failure, unless, you have poor quality gas and way too much timing. ...
Second note, the newer age knock sensors used in our year mustangs are very good at preventing detonation. This, however, is as long as your tuner hasn't changed any settings pertaining to that particular system (specifically the Retard Rate. Most dealers will set it to 1 full degree of revolution which is fuc.. well not wise).
#8 failure caused by 80% heat/timing.
What kind of tuner do you have? SCT?
I called AM and they have my air fuel ratio command at 12.2 parts to 1.
I called Steeda and they set all tunes for 11 plus models at 11.9 to 12 parts to 1.
I had spoken to the dyno operator and he said since it was a sniff test the air fuel ratio could be off by .5. He said just call and ask what the command is set for.
This tuning technical stuff is like Chinese to me. Lmao. It was his opinion that the air fuel ratio should be commanded for 12 parts to 1 and no higher for 11 plus models. He said any higher than 12 parts to 1 the car runs more lean and can cause engine failure down the road especially if people are running the car hard.
I called AM and they will gladly set any command air fuel ratio one wants. Lol. I am having them make me a 93 Hybrid tune with 12 parts to 1 air fuel ratio.
Last edited by 2011 Kona Blue; Sep 30, 2013 at 02:29 PM.
Mach 1 Member
Joined: March 1, 2007
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From: Kansas City
I am using the sct x3/sf3 tuner. I actually called MPT and they looked at my command setting for air fuel ratio at WOT and it is set for 12 parts to 1.
I called AM and they have my air fuel ratio command at 12.2 parts to 1.
I called Steeda and they set all tunes for 11 plus models at 11.9 to 12 parts to 1.
I had spoken to the dyno operator and he said since it was a sniff test the air fuel ratio could be off by .5. He said just call and ask what the command is set for.
This tuning technical stuff is like Chinese to me. Lmao. It was his opinion that the air fuel ratio should be commanded for 12 parts to 1 and no higher for 11 plus models. He said any higher than 12 parts to 1 the car runs more lean and can cause engine failure down the road especially if people are running the car hard.
I called AM and they will gladly set any command air fuel ratio one wants. Lol. I am having them make me a 93 Hybrid tune with 12 parts to 1 air fuel ratio.
I called AM and they have my air fuel ratio command at 12.2 parts to 1.
I called Steeda and they set all tunes for 11 plus models at 11.9 to 12 parts to 1.
I had spoken to the dyno operator and he said since it was a sniff test the air fuel ratio could be off by .5. He said just call and ask what the command is set for.
This tuning technical stuff is like Chinese to me. Lmao. It was his opinion that the air fuel ratio should be commanded for 12 parts to 1 and no higher for 11 plus models. He said any higher than 12 parts to 1 the car runs more lean and can cause engine failure down the road especially if people are running the car hard.
I called AM and they will gladly set any command air fuel ratio one wants. Lol. I am having them make me a 93 Hybrid tune with 12 parts to 1 air fuel ratio.
I think i'm going to have to type of a post where people know what caused #8 failure.
-Matt
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What exactly is a wide band system? I'm saving up for the short throw shifter, and I called ford credit and asked how to drop the extended warranty. They said no problem go to the dealer and fill out the form so I'm doing that when I go in to work tomorrow. Then with what everything most of you have been saying I'm gonna pull the trigger on a tune once I double check my AFR. Thank you for everyone's inputs.
Shelby GT500 Member
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I have the live link software already downloaded. All I pick is the AFR and that's it.
Shelby GT500 Member
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What exactly is a wide band system? I'm saving up for the short throw shifter, and I called ford credit and asked how to drop the extended warranty. They said no problem go to the dealer and fill out the form so I'm doing that when I go in to work tomorrow. Then with what everything most of you have been saying I'm gonna pull the trigger on a tune once I double check my AFR. Thank you for everyone's inputs.
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Shelby GT500 Member
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93 Octane and its a tune that AM makes. A hybrid tune is designed to have the DNA of their street tune mixed with the DNA of their race tune. Its supposed to give you down low power, mid and high power. Its certainly good because it got me 294 rwhp and that was on a 91 Octane tune plus having an automatic.
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93 Octane and its a tune that AM makes. A hybrid tune is designed to have the DNA of their street tune mixed with the DNA of their race tune. Its supposed to give you down low power, mid and high power. Its certainly good because it got me 294 rwhp and that was on a 91 Octane tune plus having an automatic.
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Mach 1 Member
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From: Kansas City
Once in the datalogging screen, and the car running. Just hit record, and it should show you information live.
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Do I pick all 25 to see the AFR at Wot? I have data logged before but never paid attention to the numbers. Lol
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Joined: March 21, 2013
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From: Albany, NY
Second note, the newer age knock sensors used in our year mustangs are very good at preventing detonation. This, however, is as long as your tuner hasn't changed any settings pertaining to that particular system (specifically the Retard Rate. Most dealers will set it to 1 full degree of revolution which is fuc.. well not wise).
#8 failure caused by 80% heat/timing.
#8 failure caused by 80% heat/timing.
Mach 1 Member
Joined: March 1, 2007
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From: Kansas City
I believe in the SCT livelink software its called "Measured AFR bank 1" or bank 2
In short. No. The factory rate is in my opinion is not aggressive enough. (Though i'm sure some people in R&D will disagree
) Though that is a whole story in itself. Some tuners (specifically SCT's stock value file) was setting the whole table to .5 - Bad business. This is not the only thing that can/did cause issues. I could do a whole page on it.
Here is the values for KSRR on a ZFK tear.
RPM - (Degrees per revolution) - per event.
5500 - 1.5
5000 - 1.5
4500 - 1.5
4000 - 1.5
3500 - 1.25
3000 - 1
2500 - 1
2000 - 1
1500 - 1
1000 - 1
Last edited by zeroaviation; Oct 1, 2013 at 04:49 PM. Reason: Formatted the table some
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What are all things I should check within the tune before I tune to make sure nothing will happen to my motor?