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Old 05-13-2014, 03:09 PM   #36
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I'm telling you what he told me. His exact words were " there are multiple timing tables but it will not just randomly add timing"

Whay you are seeing as he told me are the multiple timing tables. Not the car just flat out ADING timing

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Old 05-13-2014, 03:14 PM   #37
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Clueless I doubt that. I would drag anyone's *** on this forum. and he tuned them all.

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---------- Post added at 04:04 PM ---------- Previous post was at 04:04 PM ----------

You name the level and I got you covered

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I think you're misunderstanding him. And than coming on here and giving people false information that you can not back up. Whether it's a different timing table or not the computer is adding timing to the overall program. I watch my car add timing all day and you have multiple graphs right in front of your face that are showing the advancing of timing through the knock sensors.

Not sure what else to say. I'll move on.

Also, You wouldn't drag my wifes car let alone anything I own.
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Old 05-13-2014, 03:16 PM   #38
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Wanna put money on that?


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Old 05-13-2014, 03:20 PM   #39
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Does your dad know you're using his screen name? You're going to get a spank'n
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Old 05-13-2014, 03:23 PM   #40
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Does your dad know you're using his screen name? You're going to get a spank'n
I'm a firm believer in run your car not your mouth. We have a oil company that we are getting ready to head up north with. I will be heading up to north Dakota and Pennsylvania here b4 long to buy a shop etc.

On the real when I get up there maybe you can show me where some nice tracks are in Pennsylvania and we can set up some runs.

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Old 05-13-2014, 04:19 PM   #41
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Alright now, this isn't a contest about who has a bigger d**k. Just trying to get educated about my car. Steeda has told me they are looking into it now and I specifically asked them whether a negative knock sensor reading signifies advanced or retarded timing. Hopefully they can respond soon and settle any confusion. I'm on Justin's side right now purely because I want it to be true! Also, why would you ever turn your knock sensors off?? Seems like a scary idea to me!

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Old 05-14-2014, 12:58 PM   #42
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Alright now, this isn't a contest about who has a bigger d**k. Just trying to get educated about my car.

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Lmao! I was thinking the same. Gotta love the internet warriors! You will find them on every forum about every topic. I do find it entertaining so it's all good. Subd for word from steeda. I'm guessing Justin is correct but I base that assumption on my very basic understanding of what is being discussed.
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Old 05-14-2014, 01:18 PM   #43
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I would agree. After some more research, it isn't as abnormal as i originally thought for a car to advance timing based on knock sensor feedback. Going to give Steeda another call after work to see if there is any progress. Going to be driving the car 4 hours to Ocean City, MD and beat on it quite a bit this weekend.. so this was mostly for peace of mind prior to that
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Old 05-14-2014, 01:32 PM   #44
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If you'll allow me to offer any other advise here's what I have. I had a questionable tune that was pulling timing under WOT. There was also a lot of other issues that I wasn't happy with. Evolution hooked me up with a Lund tune to try out. The car is 100% a different car. If you ever want to hear more feel free to PM me. It was the best money I ever spent on this car. It drives now way better than it did stock just has a ton more power.
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Old 05-15-2014, 09:30 AM   #45
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Just to finalize this thread - I received an email back from Matt @ Steeda. He confirmed that the (-) angles measured by the knock sensor do in-fact signify advanced timing. With that said - I do not have concerns for the Steeda tune and am very happy with it (need to double check a vacuum leak since i saw lean conditions in the one recording (lambda = 1.11)).

So for future reference : (-) means advancing / (+) means retarding
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Old 05-15-2014, 09:39 AM   #46
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Thanks for clearing that up......





























For Rapinator126


























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Old 05-22-2014, 03:46 AM   #47
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I don't mean to sound like a ****** but car manufacturers have been doing this since well....before I was born really, which isn't saying much (cough) 80's child. The phrase "adaptive ECU/PCM" was coined just for this such activity. Treat the numeral value 0 as threshold. any positive integer is essentially audible noise picked up from that over-glorified microphone we call a "knock sensor". The same can be said for negative integers, except the opposite; it does not pick up any "unusual tones" thus adding timing. Simply because the ECU realizes it is safe to add timing.

My pro-cal tune was seeing a maximum of 26* at WOT, just looking into the file before the WOT pull I could see it floating around 12-14. I hear the notion of 52* is what we have in total? Correct me if I'm wrong, if it is true though, that means plenty of power left on my table to be had.
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Old 05-22-2014, 02:22 PM   #48
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Originally Posted by Coyote5o View Post
Just to finalize this thread - I received an email back from Matt @ Steeda. He confirmed that the (-) angles measured by the knock sensor do in-fact signify advanced timing. With that said - I do not have concerns for the Steeda tune and am very happy with it (need to double check a vacuum leak since i saw lean conditions in the one recording (lambda = 1.11)).

So for future reference : (-) means advancing / (+) means retarding
Thanks, this help me understand the issues better now as well.
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Old 05-31-2014, 11:45 PM   #49
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Originally Posted by Coyote5o View Post
Just to finalize this thread - I received an email back from Matt @ Steeda. He confirmed that the (-) angles measured by the knock sensor do in-fact signify advanced timing. With that said - I do not have concerns for the Steeda tune and am very happy with it (need to double check a vacuum leak since i saw lean conditions in the one recording (lambda = 1.11)).

So for future reference : (-) means advancing / (+) means retarding
I also was seeing - values and Shaun at AED said the same thing Steeda told you.

So what does Rapinator126 have to say now????
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Old 08-17-2015, 04:26 PM   #50
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ford knock sensor

writing to help out

+positive knock numbers will ****** your timing (set amount per milisecond to limits in your tunes advance tables)

-negitive (or zero) will ALLOW the system to add timing (*set amount per milisecond to the limits of the tunes advance tables)

The reason there are different tunes available for certain levels of octane fuel is because the tune contains different sets of RANGES allowable for timing advancement. example 87 octane advance max 30, 91 octane advance max 40.

+1 and under should be no cause for concern. example if you have a tune that is set for 91 octane. you will start out in the bottom of the advance curve. as long as there is no Knock detected the ECU will allow the timing to advance upto the max programmed value OR until knock is detected, at which point the process will reverse until knock is eliminated.

hope this helps guys
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Old 08-19-2015, 10:07 AM   #51
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Subscribing for info, not for the drama.
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Old 08-19-2015, 04:24 PM   #52
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Subscribing for the drama, not the info.
But this thread has been dead for a long time.
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Old 08-19-2015, 06:58 PM   #53
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Knock

Ok it is possible that both of you are right.
Normally the PCM will allow the timing to advance until knock is detected, then it would ****** until knock disappears.
With knock sensors disable it probably goes to a look up table that only allows x timing at x conditions.
I've had some training in how these things work and know enough to be dangerous!
There are a number of ways to accomplish some of this.
I think rap is turbo charged and tuned for e 85, correct me if I'm wrong and his tuner probably pushed the timing as far as he could. Disabling knock sensors more than likely disables timing adjustments as well.
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Old 08-19-2015, 07:05 PM   #54
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Ok it is possible that both of you are right.
Normally the PCM will allow the timing to advance until knock is detected, then it would ****** until knock disappears.
With knock sensors disable it probably goes to a look up table that only allows x timing at x conditions.
I've had some training in how these things work and know enough to be dangerous!
There are a number of ways to accomplish some of this.
I think rap is turbo charged and tuned for e 85, correct me if I'm wrong and his tuner probably pushed the timing as far as he could. Disabling knock sensors more than likely disables timing adjustments as well.
I believe this hits the nail on the head!

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Old 11-19-2015, 10:21 PM   #55
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No no no your car is not going to randomly add timing. Dam if that was the case my car would be adding timing out the *** since I have my knock sensors deactivated.

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Old thread but some good information .KNOCK sensor will not add or remove timing when it is deactivated , your timing will be the lowest value of mbt,borderline knock ,and max spark advance tables . Also many multipliers for coolant ,air temps and a/f ratio. Honestly don't know anyone who would deactivate the knock sensor in a tune ,its a very valuable to the life of your engine especially if you run your timing close to the limit before detonation.
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Old 07-01-2016, 01:23 PM   #56
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So, I went to the Dyno last year with a 2011 GT with JLT intake and tune and put down 382 to the wheels. Was pretty happy. I recently installed the Boss manifold and retuned with Lund, and made.....366? Huh? ya... Dunno what happened. I have been in contact with Lund and they believe that I maybe reading false knock from an exhaust rattle, thus changing the timing, not allowing it to make any power.

Has anyone else experienced such a loss due to knock sensors?




I have my datalogs, but not on this computer. I will post a screen shot when I figure it out in a few days...
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Old 07-01-2016, 05:05 PM   #57
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Where's the AED used to resuscitate this thread?

Oh, yes....lots of people that have turbos or Vorpax kits chase false knock from the tight pipe runs. It really takes very little to set them off.
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Old 07-30-2016, 01:40 PM   #58
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After fixing rattle...STILL A LOSS ON HORSEPOWER AND TORQUE!!


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