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pulling positive cable to reset

pastor scott.com

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DEV1ST8R Enthusiast

DEV1ST8R

Posted
Posted

I'd be interested in knowing the answer. . . Doesn't make sense to me though - the air mass sensor should pick up a changed reading immediately; hence, why there's a sensor there to begin with.

steve summers Enthusiast

steve summers

Posted
Posted
Heard someone say that if you dont pull batt cable to reset computer your engine wont reset for the more air flow. is that true?

 

 

 

Scott

 

 

 

 

You only have to do that if you stood on two feet with your toes curled up when you installed the K+N. :chevy::D

Bish Senior Enthusiast

Bish

Posted
Posted
Heard someone say that if you dont pull batt cable to reset computer your engine wont reset for the more air flow. is that true?

 

 

 

Scott

 

 

 

 

Pulling the battery cable makes the "learning" go back to square 1 and your truck starts to re-learn how to run with the new components. When I put an exhauat and intake on, I did not reset the computer. I drove it for a few days and read a post regarding this re-learn. When I did it, there was a definite SOTP improvement. When you do the reset, your truck will barely idle for the first 10 seconds while it learns the proper air/fuel, timing, etc. As you drive, it also learns your driving habits. For example, when I first got my truck, I would have to really get into the accelerator to get it to downshift. After a while, it figured out that I this is the way I drive and started to downshift much sooner.

 

Some have even suggested you reset every 6 months or so because their trucks seem to "mellow out" a little after the computer compensates for any new HP adders. Not sure If I'm convinced 100% on this one but in the case of my exhaust/intake, I'm convinced there was a noticeable difference.

steve summers Enthusiast

steve summers

Posted
Posted
Heard someone say that if you dont pull batt cable to reset computer your engine wont reset for the more air flow. is that true?

 

 

 

Scott

 

 

 

 

Pulling the battery cable makes the "learning" go back to square 1 and your truck starts to re-learn how to run with the new components. When I put an exhauat and intake on, I did not reset the computer. I drove it for a few days and read a post regarding this re-learn. When I did it, there was a definite SOTP improvement. When you do the reset, your truck will barely idle for the first 10 seconds while it learns the proper air/fuel, timing, etc. As you drive, it also learns your driving habits. For example, when I first got my truck, I would have to really get into the accelerator to get it to downshift. After a while, it figured out that I this is the way I drive and started to downshift much sooner.

 

Some have even suggested you reset every 6 months or so because their trucks seem to "mellow out" a little after the computer compensates for any new HP adders. Not sure If I'm convinced 100% on this one but in the case of my exhaust/intake, I'm convinced there was a noticeable difference.

 

 

 

 

 

I'd like an experts review on this, I personally don't think GM has built any "artificial intelligence" into the engine modules. They process sensor information, and set engine parameters based on the current observations. Adding logic to set parameters based on 'trending" is pretty complex and would require some significant amount of data storage capabilities like an on board hard drive.

 

Just my .02 and I certainly could be wrong.

Bish Senior Enthusiast

Bish

Posted
Posted

Take a look at THIS piece of GM lit. It says "Adaptive Shift Patterns - Sensors read driving habits and constantly adapt the vehicle's electronic transmission's shift points to individual driving styles. For spirited drivers, the transmission shifts more aggressively, while for economical drivers, there is a different approach...........The control system collects data, "remembers" driving behavior. and allows the vehicle to respond in a more enthusiastic manner."

 

Not sure what your definition of adaptive learning is but this sure fits it for me :chevy:

steve summers Enthusiast

steve summers

Posted
Posted
Take a look at THIS piece of GM lit.  It says "Adaptive Shift Patterns - Sensors read driving habits and constantly adapt the vehicle's electronic transmission's shift points to individual driving styles.  For spirited drivers, the transmission shifts more aggressively, while for economical drivers, there is a different approach...........The control system collects data, "remembers" driving behavior. and allows the vehicle to respond in a more enthusiastic manner."

 

Not sure what your definition of adaptive learning is but this sure fits it for me  :chevy:

 

 

 

 

I stand somewhat corrected although the only part I saw that was "adaptive" was the transmission shift points. With 512k of memory, 100k lines of code, and 150k bytes of "values" there isn't much room left for much "adaptation". I also have to wonder if this is something that is incorporated into our trucks. We don't have Driver shift control either.

 

This procedure also is based on the idea that the area of the PCM that has this data is volatile. I don't see why GM would let important info like this collected to improve driver satisfaction go down the tubes when the battery is disconnected. The remainder of the PCM code/values are not volatile and are maintained across a power loss.

 

I had a Silverado SS prior to this truck, I never noticed a difference in shift points until I had the PCM re-programmed. And trust me, I drove it hard, before, and after the PCM.

 

Regardless you felt a SOTP change from the procedure, that is significant. I might try it just to see if I can get this new lazy 5.3L to get up and go...

pastor scott.com Enthusiast

pastor scott.com

Posted
  • Author
Posted

I tried the battery reset after my K and N and Flomaster change. I believe it did work. It was feeling so lazy after the upgrades and MPG dropped. So I reset the Comp.

 

Worth a try. it worked

 

SCott

heavy4x4 Enthusiast

heavy4x4

Posted
Posted

Does disconnecting the battery and doing this reset also get rid of any computer programming the vehicle might have (Hypertech or otherwise)? I bought my truck used so I don't know if it does, but my truck hauls-ass pretty well and can light the tires up without much effort...I don't want to lose any program it might have if I need to change the battery some day.

 

-Steve

steve summers Enthusiast

steve summers

Posted
Posted
Does disconnecting the battery and doing this reset also get rid of any computer programming the vehicle might have (Hypertech or otherwise)?  I bought my truck used so I don't know if it does, but my truck hauls-ass pretty well and can light the tires up without much effort...I don't want to lose any program it might have if I need to change the battery some day.

 

-Steve

 

 

 

 

The programming should be non-volatile, although the added performance could be some adaptive response to your spirited driving! :cheers:

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