Duramax Diesels Forum Truck of the Week
  #721  
Old 10-15-2018, 06:49 PM
dmax_ty dmax_ty is offline
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Looks like Kory is the first to offer it for purchase at this point. Pony up $4100 and it’s all yours.
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  #722  
Old 10-15-2018, 07:01 PM
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Default L5P Tuning

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Originally Posted by dmax_ty View Post
Looks like Kory is the first to offer it for purchase at this point. Pony up $4100 and itís all yours.
Looks like he already offers soft tuning and switch already.
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  #723  
Old 10-15-2018, 09:03 PM
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Quote:
Originally Posted by Ne-max View Post
Looks like he already offers soft tuning and switch already.
Quote:
Originally Posted by othrgrl View Post
Because SOTF is nothing more than an electronic throttle stop that taps into a sensor circuit that he can use as a fuel limiter based on voltage. It is nothing at all like DSP5 from EFI Live where there are actually separate tables for all of the key things in the tuning to completely change how the truck runs at any and all throttle positions. Hell, if you know what the limiting table in the stock tune looks like for the sensor you at tapping into you can set up a switch with resistors to hit voltage set points and limit fuel to what you want, even on a stock tune.


Let's just say that something better than that FAKE switchable is coming soon.... Because with these fuel temp limit styles, you might as well just run a single tune.

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  #724  
Old 10-16-2018, 04:08 AM
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SOTF?
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  #725  
Old 10-16-2018, 04:40 AM
gmc502 gmc502 is offline
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switch on the fly
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  #726  
Old 10-17-2018, 09:34 AM
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  #727  
Old 10-18-2018, 07:26 AM
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Ok guys. The DSP discussion seemed to be taking over this thread. I know we're pretty liberal with thread derails here, but the L5P tuning is new enough that it doesn't derve such a massive derail on an active thread. In the interest of keeping the discussion a little more on topic, I moved all the DSP stuff to a new thread. Please see the post here. Carry on!
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  #728  
Old 10-18-2018, 12:30 PM
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So if the ez link can flash a factory tune into the ecm why does hp tuners need to modify the ecm to accept their tune? Is this like needing an unlock tool for the 13+ Cummins and years later Efi LIVE finally decided they can do it without it?
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  #729  
Old 10-18-2018, 01:19 PM
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Quote:
Originally Posted by gmduramax View Post
So if the ez link can flash a factory tune into the ecm why does hp tuners need to modify the ecm to accept their tune? Is this like needing an unlock tool for the 13+ Cummins and years later Efi LIVE finally decided they can do it without it?
I'm going to guess it has something to do with security protocols and code verifications before the ECM will accept a flash. From what I understand, once the ECM is unlocked by HPTuners, the factory equipment can no longer flash it.
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  #730  
Old 10-18-2018, 01:34 PM
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Quote:
Originally Posted by JoshH View Post
I'm going to guess it has something to do with security protocols and code verifications before the ECM will accept a flash. From what I understand, once the ECM is unlocked by HPTuners, the factory equipment can no longer flash it.
So then I wonder if gm can even hook to it and tell if itís been flashed, of course if not than they would suspect something is up. But can they void your warranty if they canít pull the codes off of it.
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  #731  
Old 10-18-2018, 01:51 PM
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Factory equipment cant flash it. Doesnt mean it cant read codes.
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  #732  
Old 10-18-2018, 02:12 PM
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Quote:
Originally Posted by JoshH View Post
I'm going to guess it has something to do with security protocols and code verifications before the ECM will accept a flash. From what I understand, once the ECM is unlocked by HPTuners, the factory equipment can no longer flash it.

The factory ECU Chip is being replaced with a NON GM Controlled chip.


That is part of the reason why the cost is so high for the unlock, IIRC is a 516 PIN EEPROM that is bedded in a hard epoxy like coating, the removal process requires heating it and carefully removing the factory chip without damaging the rest of the ecm and the board, then resoldering a replacement chip.


No JTAG or BOOT Method is possible from GM with this ECU, so once HP Tuners has their own chip on the ecm they shut the door on GM and everyone else................

So that is the current process for this ECU, if someone figures out a way to undo HP Tuners control and then flash it with a process they control then see the fireworks begin.
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Last edited by GMC_2002_Dmax; 10-19-2018 at 07:04 AM.
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  #733  
Old 10-18-2018, 09:51 PM
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6500lb L5P went 12.3 @108. Should be 550hp to the tires.
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  #734  
Old 10-19-2018, 04:03 AM
036.6turbo 036.6turbo is offline
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Quote:
Originally Posted by GMC_2002_Dmax View Post
The factory ECU Chip is being replaced with a NON GM Controlled chip.


That is part of the reason why the cost is so high for he unlock, IIRC is a 516 PIN EEPROM that is bedded in a hard epoxy like coating, the removal process requires heating it and carefully removing the factory chip without damaging the rest of the ecm and the board, then resoldering a replacement chip.


No JTAG or BOOT Method is possible from GM with this ECU, so once HP Tuners has their own chip on the ecm they shut the door on GM and everyone else................
Hmmm, that has some ramifications? So who's diagnostic software / hardware will be used?

How can Mike L yell at guys for not reading trans codes with a TECH II, if the door is shut? (On these 2018 and newer trucks will a TECH II even still work, or are they MDI only?)

Or is the plan to put the factory ECM back in whenever diagnostics need to be performed?

Maybe HP tuners has all the same diagnostic abilities a TECH II or GM MDI does?

I sure they have thought of all this, just curious how they plan to do it.
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  #735  
Old 10-19-2018, 06:41 AM
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Quote:
Originally Posted by 036.6turbo View Post
Hmmm, that has some ramifications? So who's diagnostic software / hardware will be used?

How can Mike L yell at guys for not reading trans codes with a TECH II, if the door is shut? (On these 2018 and newer trucks will a TECH II even still work, or are they MDI only?)

Or is the plan to put the factory ECM back in whenever diagnostics need to be performed?

Maybe HP tuners has all the same diagnostic abilities a TECH II or GM MDI does?

I sure they have thought of all this, just curious how they plan to do it.
He was close. But not quite.

TIS/GM/dealer flash won't work.

Everything else is a go
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