Edit And Self Learning Pcm

[Paradoxx]

I figured it was mostly for economy issues, different fuels and atmospheric conditions etc. The closed loop functions are mainly designed for fuel economy and safety (to prevent detonation)

[macka'sxr6t]

This maybe true and the self learning may not change how the engine performs.

But how often should you have your tune checked. Engine performance does change over time.

What causes these changes?

macka

[Paradoxx]

I would suggest at the same time you service your car, not much use changing your tune if you don't give it some new oil and filter etc. Give it a dyno power run after servicing and see where it's at. If it hasn't dropped much then leave it. If you are pumping out the power I would say between 7000 - 10000 km for each servicing.

[FORDTECH]

  cobrav8 said:

It is likely to learn how you drive (if anything) so that it adjusts shift points etc.  I doubt that it would change over time to protect itself.

<{POST_SNAPBACK}>

That's pretty much spot on.The adaptive strategy of the PCM is to adapt the engine control and trans control to the way the owner drives the vehicle.So in certain cases the vehicle can actually be un economical due to the way it's driven and can be retrained simply by erasing the adaptive table(memory) of the PCM.With this in mind ,and if the adaptive strategy was still active with the edit, it may actually be benificial.

[turbotom]

The self learning capabilities are there to adjust ignition timing and fuel delivery within a small range to optimise fuel economy, and reduce emmissions and prevent detonation/pinging due to fuel octane variations and atmospheric and load conditions.

Like XXXR6T has said, I wouldn't worry about it if you can't notice a difference.

If you have done further mods, or hear / feel some pinging under heavy load, or your fuel consumption has increased markedly, or you suddenly notice your ET's at the strip are down by more than 0.5 seconds, then sure.... then sure, possibly go for a retune.

But if all is working well, why would you bother to retune?

Have some faith in your own ability to monitor YOUR engine.

Take some personal responsibility.

Or are you one of these dudes who likes to put all the blame on someone else when things stuff up.

Bottom line, "You play, you pay."

[jordak]

  macka said:

Hi guy's just after some feedback from members who have had the edit tunes now since they first arrived 9 months ago.

With the self learning capability I was wondering if anyone has noticed any change in the engines performance.

The reason why I ask is that I have heard of people running edits on their crapadoors have experienced issues with their tunes altering due to the self learning capabilities of the modern ECU's and for the need to have regular touch ups to keep their cars running in a good state of tune. 

And I was just wondering if the tunes in the Ford edit were doing the same.

macka

<{POST_SNAPBACK}>

It's definately a possibility that the self learning capabilities of the ECU can effect custom edit tunes over time. Either that or the custom tune itself changes.

Over the last several months I have taken my car back to the tuner for tweaks following mods oras upgraded software became available. On a few occassions initial runs on the dyno reflected a drop in power when compared to the same tune months earlier.

Most recently after driving around for a month or so with bigger injectors / free flowing exhaust and a re-tune I took it back to the Tuner as it seemed to have lost a bit in the low-midrange. The initial run showed a drop in power of 20-25rwkw across the entire rev range. Most noticably boost had dropped, once again across the range (pulls from 3000+rpm instead of 2000rpm.

Jury is out re the cause of the fluctuation although theres a good chance the ECU has pulled some timing out for some reason. Whether this can effect boost levels I dont know.

[markxr6t]

So if you drive like a lunatic all the time, can the self learning function give more power over time?????

Mark

[cobrav8]

So when you reload your tune - does this reset the learnt things?

ie - if your computer has learnt you thrash it mercilessly - surely Ford can see this if you reflash and it isnt cleared out?

[macka'sxr6t]

  turbotom said:

But if all is working well, why would you bother to retune?

Have some faith in your own ability to monitor YOUR engine.

Take some personal responsibility.

Or are you one of these dudes who likes to put all the blame on someone else when things stuff up.

Bottom line, "You play, you pay."

<{POST_SNAPBACK}>

Excuse me why the attack

macka

[xrturb]

I hate that saying "you play you pay"

ford dont give a sh*t about you so why would you care about them