Dyno Tune Talk

[Shora]

Why does the weather, temperature, humidity affect a dyne tune?

What I am asking is why OE cars can adopt to all different climates and temperatures, yet one is almost always advised to tune their cars near home?

WT heck! What gets turned off during these tunes that no longer allows them to adopt to climate changes?

[Pat]

In the 2006 Ford Racing cataloge is a very good two page article, "Engine Dynamoter Testing Baics" that answers all your posted questions. Maybe your dealer has a copy or a friend?

Or, you can go online now and view the 2009 catalog and on page 35 is an updated dyno basic article. WWW.fordracingparts.com (http://www.fordracingparts.com)

Enjoy.

Regards,

[Shora]

Thanks for the link. Maybe I missed it, but I didn't find exactly what I was looking for.

What gets turned off when a Dyno tune is done. Why is it not possible to allow the "new" tunes to adjust to different climate conditions like the OEM tune does?

[Local Boy]

There are two schools of thought here...

1. Tuners turn off the adaptive function on the ECM during the dyno run and tune, so the ECM does not adjust for different variables...and leaves it off...Always...

This is so the tune stays exactly as it was made on the Dyno...(Does not change...ever)

2. Others turn off the adaptive function while on the Dyno, to prevent the ECM from adjusting (looking for accuracy)while operating on the Dyno...and turn it back on after the Dyno settings are done...

This allows the ECM to make small adjustments (it really cannot make large adjustments anyway to the tune [argumentative]) to the current conditions the motor operates in...

I believe the latter applys...others will disagree...

To get the best of both worlds...I re-install the tune every other oil change...

Takes 2 minutes...

Works for me...

Hope this helps...

ALOHA

[Shora]

There are two schools of thought here...

1. Tuners turn off the adaptive function on the ECM during the dyno run and tune, so the ECM does not adjust for different variables...and leaves it off...Always...

This is so the tune stays exactly as it was made on the Dyno...(Does not change...ever)

2. Others turn off the adaptive function while on the Dyno, to prevent the ECM from adjusting (looking for accuracy)while operating on the Dyno...and turn it back on after the Dyno settings are done...

This allows the ECM to make small adjustments (it really cannot make large adjustments anyway to the tune [argumentative]) to the current conditions the motor operates in...

I believe the latter applys...others will disagree...

To get the best of both worlds...I re-install the tune every other oil change...

Takes 2 minutes...

Works for me...

Hope this helps...

ALOHA

Thanks for the info. Why is it not possible to turn off the adaptive function while setting the tune and then turn it back on to full capacity after the tune so that it adopts in a safe manner tp different conditions like the OE tune does.

Also, how does re-installing the tune every oil change help in anyway? Does it adopt at the time of install or "according to climate conditions"?

I am really not understanding how this works.

[Cobra25]

Why don't you just call up Dennis Reinhart and ask him.

[Bulten Rauder]

Why don't you just Dennis Reinhart up and ask him.

+1. DR will set you straight :rock:

[Shora]

Why don't you just Dennis Reinhart up and ask him.


I don't want to bother a man who could be making money instead of answering my questions.

You all, on the other hand, killing time chilling here I have no worries about.;)

I find it scary that almost 50% (or more?!?!) of this board has a cutome tune yet are not worried about what gets turned off and the extra risk.

[RR|Suki]

I don't want to bother a man who could be making money instead of answering my questions.

You all, on the other hand, killing time chilling here I have no worries about.;)

I find it scary that almost 50% (or more?!?!) of this board has a cutome tune yet are not worried about what gets turned off and the extra risk.

That's why I have a wideband A/F gauge :D

I'd say the reason why adaptive learning gets turned off is illustrated by my buddies mini cooper. You got a performance tune for performance, adaptive learning is about averages.
So his car had adaptive learning left on, we put it on the dyno at VT it made something like 188whp. We unplugged the batt for 15 minutes with it strapped to the dyno. Hooked everything back up and he got into it right away and made a run.... 210whp.
My car on the other hand will do the same thing after reset as it did pre reset, but won't adjust well if I move to Colorado, where Shawn's car might not feel too much different to him. So if you have a perfomance tune which turns off adaptive learning then you should have it re tuned if you change location drastically, the point is for the tune to do just what the tuner told it to 100% of the time. It's your responsibility as the customer of performance products to take these extra steps :beer:

[Shora]

That's why I have a wideband A/F gauge :D

I'd say the reason why adaptive learning gets turned off is illustrated by my buddies mini cooper. You got a performance tune for performance, adaptive learning is about averages.
So his car had adaptive learning left on, we put it on the dyno at VT it made something like 180whp. We unplugged the batt for 15 minutes with it strapped to the dyno. Hooked everything back up and he got into it right away and made a run.... 210whp.
My car on the other hand will do the same thing after reset as it did pre reset, but won't adjust well if I move to Colorado, where Shawn's car might not feel too much different to him. So if you have a perfomance tune which turns off adaptive learning then you should have it re tuned if you change location drastically, the point is for the tune to do just what the tuner told it to 100% of the time. It's your responsibility as the customer of performance products to take these extra steps :beer:

Great explanation.

Thanks.

[Local Boy]

RR/Suki is correct...

Like I was saying...

Two schools of thought...

As a customer, you chose what direction you want the tuner to go...

Likewise, you must know the pro's and con's of each direction...

Personally, I chose to turn it (adaptive function) back on and have the ECM adjust itself as designed...

With regard to "Why re-install the tune"...

After a while (@2K miles), it just seems (feels) to me that the car adjusts itself too far from the original tune...Hence, I re-install the tune to "Snap it" back...;)

It really is something I do ...in case the other school of thought (leaving the Adaptive function off, always) is correct...:D

It works for me...:beer:

ALOHA

[Dennis Reinhart]

Why does the weather, temperature, humidity affect a dyne tune?

What I am asking is why OE cars can adopt to all different climates and temperatures, yet one is almost always advised to tune their cars near home?

WT heck! What gets turned off during these tunes that no longer allows them to adopt to climate changes?


It is all about IAT = intake air temperature actual AF = air fuel at WOT and spark, it also depends on what SC you run and what your knock sensors are set up for, and this is dependent on the car you drive, some cars have knock sensors that were never even turned on by Ford, the Marauder Mach 1 does, the 03 Cobra and lightings do not. Some SC are prone to rapid heat soak some are not, there is a wealth of knowledge here and on the Internet.