[davidson219]

Is it possible to use the Cortex to ONLY turn off AFM? NO changes to trans shifts, NO changes to timing

 

[firemate]

Yes.

 

[davidson219]

Thanks for your response-

I am assuming your answer of yes is telling me that by choosing Stock With Options, and only disabling AFM it will in no way affect engine timing or shifting?

To me it seems like the shifts are different. Perhaps this is due to the reset/relearn process...

 

[zepcom]

You must go into "advanced tune" and manually select everything "stock" -- shift points for each gear, shift torque, everything. That's how I used to run my winter setup with teh superchips. Just AFM off and even stock shift torque.

It takes a while via the embedded menus the first time or two, but then you get the hang of it and going into advanced mode becomes second nature. I don't think I ever tuned "quick tune" ever. Always "advanced".

Hope this helps...

--zepcom

 

[Aaron407]

You must go into "advanced tune" and manually select everything "stock" -- shift points for each gear, shift torque, everything. That's how I used to run my winter setup with teh superchips. Just AFM off and even stock shift torque.

It takes a while via the embedded menus the first time or two, but then you get the hang of it and going into advanced mode becomes second nature. I don't think I ever tuned "quick tune" ever. Always "advanced".

Hope this helps...

--zepcom

Be aware that, even if you put everything to stock values, the tune is not completely stock, even with the SC 87 tune. There are no options to modify the timing values back to stock, and various other options have been modified by Superchips that you can't set to stock. The only time you might be able to get away with only the AFM turned off is if you manage to get the "Stock with Options" selection ability, but I personally don't have that as an option now and only came across it once during a series of updates. So, unless I'm missing something, you can't merely turn off AFM alone unless you can find "Stock with Options."

 

[zepcom]

That is correct.

It is more accurately described as "Superchips interpretation of stock" since they are unable to physically reverse-engineer the stock GM ECM and TCM tunes.

From my experience, they were close enough, at least in the older revisions of the superchips tuner (early 2's). I did notice a slight firmer shift when shiftpoints and shift torque were "stock" which was tons better than the factory craptastic loose shifting and hunting when dropping the hammer. The superchips "stock" was better than real stock; go figure!

 

[Aaron407]

That is correct.

It is more accurately described as "Superchips interpretation of stock" since they are unable to physically reverse-engineer the stock GM ECM and TCM tunes.

From my experience, they were close enough, at least in the older revisions of the superchips tuner (early 2's). I did notice a slight firmer shift when shiftpoints and shift torque were "stock" which was tons better than the factory craptastic loose shifting and hunting when dropping the hammer. The superchips "stock" was better than real stock; go figure!

I agree that it's their interpretation of 'near stock' and that it's better than the actual stock tune, but I'm not sure I follow what you mean by "unable to physically reverse-engineer the stock GM ECM and TCM tunes." Superchips, with whatever sofware package they have, have been able to bypass the encryption and map out which areas of the ECM and TCM memory registers carry what type of information. By doing this, they are able to essentially reverse engineer since they can see the current values programmed by GM and work to improve them. While on the clubgp board I was in touch with another member who was doing exactly this by mapping through excel and editing bin files this way. It was a crazy impressive venture on his part, and although the PCMs in those cars are different from our ECM/TCM combination, I would personally consider this reverse engineering since it's digging down to the basic fundamental programming components in order to mimic them, but improve on their purpose.