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Old 05-21-2013, 06:52 PM   #1
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Sct tuner question

How long does it take to do the firmware update process?
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Old 05-21-2013, 07:02 PM   #2
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I think mine took about 5 minutes.
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Old 05-21-2013, 07:05 PM   #3
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Super snappy process.
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Old 05-21-2013, 07:09 PM   #4
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Been working on this crap for about a hour and half.
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Old 05-22-2013, 08:49 PM   #5
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Just install the bama race tune for the first time and all I can say is WOW. Installing the cat deletes tomorrow
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Old 05-23-2013, 01:09 AM   #6
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I honestly felt the hybrid was stronger on my car
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Old 05-23-2013, 04:50 AM   #7
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I honestly felt the hybrid was stronger on my car
Lol well I have that one has well too
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Old 05-23-2013, 06:25 AM   #8
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Do you have to do the relearn idle after a tune?
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Old 05-23-2013, 07:18 AM   #9
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Do you have to do the relearn idle after a tune?
Absolutley
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Old 05-23-2013, 07:22 AM   #10
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Absolutley
How to relearn your idle? im curious on this one. Thanks
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Old 05-23-2013, 07:38 AM   #11
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No, just drive it; unless you experience problems then you can try the idle relearn.

I tune mine and drive off. I've changed the tunes back and forth depending on my mood for the day and have never done the idle relearn to no ill effect.
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Old 05-23-2013, 08:11 AM   #12
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No, just drive it; unless you experience problems then you can try the idle relearn.

I tune mine and drive off. I've changed the tunes back and forth depending on my mood for the day and have never done the idle relearn to no ill effect.
Same here. Never done the idle retune. Tuned back and forth from Race, hybrid, performance and stock with no issues on the idle. Tune and cruise.
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Old 05-23-2013, 08:14 AM   #13
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Nice.. I should just leave it since i have no problem. Just curious.. My race tune is more aggressive than my hybrid. Probably cos i tuned it for 93 and my hybrid is 91..
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Old 05-23-2013, 08:32 AM   #14
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How long does it take to do the firmware update process?
Depends - sometimes it takes a few minutes, but sometimes things go bad and it wipes the entire handheld. This process takes 1-2 hours.

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Do you have to do the relearn idle after a tune?
Yes, you are almost assured to have drivability issues if you don't. Anytime the ECU is "reset" you MUST perform the fuel trim/idle relearn procedure as outlined in your owners manual. Even disconnecting the battery cable for a few seconds will necessitate this.

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No, just drive it; unless you experience problems then you can try the idle relearn.

I tune mine and drive off. I've changed the tunes back and forth depending on my mood for the day and have never done the idle relearn to no ill effect.
I strongly recommend against this course of action. It only takes a few minutes to complete the procedure properly and it's a pain to do it down the road.
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Old 05-23-2013, 08:35 AM   #15
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Depends - sometimes it takes a few minutes, but sometimes things go bad and it wipes the entire handheld. This process takes 1-2 hours.

Yes, you are almost assured to have drivability issues if you don't. Anytime the ECU is "reset" you MUST perform the fuel trim/idle relearn procedure as outlined in your owners manual. Even disconnecting the battery cable for a few seconds will necessitate this.

I strongly recommend against this course of action. It only takes a few minutes to complete the procedure properly and it's a pain to do it down the road.
So just unplug the negative battery for 20 mins and put it back on. This will do its trick? Every time you change tune?
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Old 05-23-2013, 09:42 AM   #16
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It was weird, I crank it up and it stuck like it was still trying to crank, then the ac wouldn't get cold for about 20 minutes.
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Old 05-23-2013, 11:34 AM   #17
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So just unplug the negative battery for 20 mins and put it back on. This will do its trick? Every time you change tune?
No, that's redundant. When you load the tune you need to do the idle relearn on first startup. If you mess it up or forget to do it you can pull the battery cable to make it "forget" and then start it up and do the relearn. The procedure is very specific though, so make sure you read the directions completely before starting. I believe it needs to be a cold start for the process to start, so make sure the car has been sitting for a few hours first.
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Old 05-23-2013, 11:52 AM   #18
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No, that's redundant. When you load the tune you need to do the idle relearn on first startup. If you mess it up or forget to do it you can pull the battery cable to make it "forget" and then start it up and do the relearn. The procedure is very specific though, so make sure you read the directions completely before starting. I believe it needs to be a cold start for the process to start, so make sure the car has been sitting for a few hours first.
Sorry too many questions here, where can i find the instructions for the idle relearn?
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Old 05-23-2013, 12:00 PM   #19
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Ya same here, when I loaded my tune I just updated and off I was driving. I have a new tune coming in the next day or so and never gave the idle relearn a thought.
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Old 05-23-2013, 01:40 PM   #20
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No, that's redundant. When you load the tune you need to do the idle relearn on first startup. If you mess it up or forget to do it you can pull the battery cable to make it "forget" and then start it up and do the relearn. The procedure is very specific though, so make sure you read the directions completely before starting. I believe it needs to be a cold start for the process to start, so make sure the car has been sitting for a few hours first.
Per the owners manual the idle relearn can be done two ways. While driving the car will learn on its own. Just can take longer. Or you can do the quick process. I've never done the quick process and the car has always ran fine. Now if it was acting up, I wouldn't hesitate to do the idle relearn the fast way.
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Old 05-23-2013, 02:27 PM   #21
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Per the owners manual the idle relearn can be done two ways. While driving the car will learn on its own. Just can take longer. Or you can do the quick process. I've never done the quick process and the car has always ran fine. Now if it was acting up, I wouldn't hesitate to do the idle relearn the fast way.
I just uploaded the page from the manual, nothing is mentioned about just driving around other than the requisite ten miles that is a part of the procedure.
Attached Files
File Type: pdf Relearn Idle.pdf (48.7 KB, 211 views)
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Old 05-23-2013, 03:46 PM   #22
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Even though the document does not specifically call out "driving around", I would conclude from reading the bullet points that "driving around" will eventually fix minor idle issues.

From the statement in bold in the manual: "If you do not allowthe engine to relearn its idle trim, the idle quality of your vehicle may be adversely affected until the idle trim is eventually relearned." This does not tell me what “eventually”means. Do they mean that I, as theowner, will “eventually” follow the steps to relearn the idle? That is a prettybig assumption. Or, on a more realistic assumption: Does “eventually” mean that as you drive more the computer will adjust the idle and fuel strategy? This seems more plausible.

The fact that Ford uses the word “may” in the sentence; “The vehicle may need to be driven 10 miles or more to relearn the idle and fuel strategy” does not explicitly make driving 10 miles a requisite for relearning the idle. Furthermore, this suggests that a 10 mile drive will not be enough distance, also suggesting that “driving around” is the best approach for the computer to relearn idle and fuel strategy.

The words "may" and “eventually" make these sentences ambiguousat best. I cannot come to a specific conclusion on what is guaranteed to relearn the idle and fuel strategy with the car other than “driving around”. IMHO.
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Old 05-23-2013, 03:56 PM   #23
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Even though the document does not specifically call out "driving around", I would conclude from reading the bullet points that "driving around" will eventually fix minor idle issues.

From the statement in bold in the manual: "If you do not allowthe engine to relearn its idle trim, the idle quality of your vehicle may be adversely affected until the idle trim is eventually relearned." This does not tell me what “eventually”means. Do they mean that I, as theowner, will “eventually” follow the steps to relearn the idle? That is a prettybig assumption. Or, on a more realistic assumption: Does “eventually” mean that as you drive more the computer will adjust the idle and fuel strategy? This seems more plausible.

The fact that Ford uses the word “may” in the sentence; “The vehicle may need to be driven 10 miles or more to relearn the idle and fuel strategy” does not explicitly make driving 10 miles a requisite for relearning the idle. Furthermore, this suggests that a 10 mile drive will not be enough distance, also suggesting that “driving around” is the best approach for the computer to relearn idle and fuel strategy.

The words "may" and “eventually" make these sentences ambiguousat best. I cannot come to a specific conclusion on what is guaranteed to relearn the idle and fuel strategy with the car other than “driving around”. IMHO.
Or you could just follow the instructions in the manual. I'm not sure why everyone is so resistant to just following the directions, it's not hard or overly time consuming ...
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Old 05-23-2013, 04:31 PM   #24
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I've swapped tunes over a dozen times and an idle relearn was never done. It's not necessary.
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Old 05-24-2013, 12:26 PM   #25
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I've swapped tunes over a dozen times and an idle relearn was never done. It's not necessary.
And there are dozens of people that had major issues after not performing the relearn. To say that it's not necessary on any car based on your experience with ONE car is not sound logic or good advice.

I concede that you may not have problems if you skip it, but many people have. It's such a simple procedure that eliminates the possibility of so many issues that I don't see the point in skipping it.
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Old 10-20-2017, 08:44 AM   #26
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Per the owners manual the idle relearn can be done two ways. While driving the car will learn on its own. Just can take longer. Or you can do the quick process. I've never done the quick process and the car has always ran fine. Now if it was acting up, I wouldn't hesitate to do the idle relearn the fast way.
and what is the quick process? un-plugging the battery?
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