Duramax Diesels Forum Truck of the Week
  #16  
Old 08-20-2017, 11:30 AM
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That EFILive thread was depressing. If Tony, Kory, Ross and Ben all agree its not possible, then damn.
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  #17  
Old 08-20-2017, 01:12 PM
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My guess we will see replacement, tune able ECMs that will plug into the L5P harness.

It will be expensive but people will pay. And it could potentially be very very advantageous in the aftermarket because there would no longer be "hidden tables" and stuff like that to deal with.


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Best 1/8th, 7.29, 98.6MPH (Street tires, fuel only, single Journal bearing GT42 charger) (2010)

Best 1/8th, 6.93, 104.24MPH (Street tires, fuel only, single HX60 turbo) (2016)

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  #18  
Old 08-20-2017, 01:36 PM
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Quote:
Originally Posted by IOWA LLY View Post
My guess we will see replacement, tune able ECMs that will plug into the L5P harness.

It will be expensive but people will pay. And it could potentially be very very advantageous in the aftermarket because there would no longer be "hidden tables" and stuff like that to deal with.


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I don't see that happening cause all of the modules have to talk to each other..
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  #19  
Old 08-20-2017, 02:18 PM
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Quote:
Originally Posted by Ne-max View Post
I don't see that happening cause all of the modules have to talk to each other..
That's true but there is a lot of $$$ in tuning/deleting these trucks. If this is the point where it is cheaper to develop an ecm that can communicate with the bcm/tcm/gpcm than it is to unlock the stock ecm to tune it, someone will build a compatible ecm & sell it. Almost every aftermarket standalone ecm on the market today is capable of talking to several different modules via a CANbus (all of the module currently being aftermarket)
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  #20  
Old 08-20-2017, 02:26 PM
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Won't happen. GM put a stop to it once and for all with the L5P at least that's what I was told. Funny thing is I remember everyone agreeing that if GM released a 450 hp stock engine there would be no need... Lol...
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  #21  
Old 08-20-2017, 03:42 PM
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Quote:
Originally Posted by henery97 View Post
That's true but there is a lot of $$$ in tuning/deleting these trucks. If this is the point where it is cheaper to develop an ecm that can communicate with the bcm/tcm/gpcm than it is to unlock the stock ecm to tune it, someone will build a compatible ecm & sell it. Almost every aftermarket standalone ecm on the market today is capable of talking to several different modules via a CANbus (all of the module currently being aftermarket)
But if the other modules are the same way.
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  #22  
Old 08-20-2017, 05:40 PM
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If you read through that efilive thread, a stand alone lml ecm/tcm combo was posted. It's not cheap at $5K, but it is designed to give lb7 type tuning to lly+ trucks. No nonsense, no bs, just straight tuning. And if it can work for an lml, it stands to reason it can be adapted to the l5p. And as to making the other modules work, I'm sure somebody like kidturbo could make a gateway to do so if there was enough interest. So yes, they could be tuned. But it won't be easy, cheap, and not for the average owner.
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  #23  
Old 08-20-2017, 05:47 PM
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Only way it happens is if accompany partners with GM for a "racing division" or something along those lines.

This avoids legal issues, ensures GM is paid a royalty fee (for there base tuning), and virtually eliminates warranty fraud. Only way I see it happening. And yes even this is a long shot.
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  #24  
Old 08-22-2017, 08:50 PM
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Just put 60 miles on my truck and very disappointed, I have a coolant leak on the bottom radiator hose and the leather on the steering wheel it has a bubble...
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  #25  
Old 08-23-2017, 05:35 AM
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dang that sucks....
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  #26  
Old 08-24-2017, 02:54 PM
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Turned out to be a cracked radiator, told dealer I didn't want their truck no more .
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  #27  
Old 08-24-2017, 03:01 PM
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Quote:
Originally Posted by blackLTZ View Post
Turned out to be a cracked radiator, told dealer I didn't want their truck no more .
Good for you!
Do they have a return policy?
I know my local dealer does a 30day thing but who knows if they truly honor that...
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2005 2500 CC/SB "LLY" LTZ
Typical mods for Longevity
awaiting stuff to go BooM then replace with more go fast parts!

And a few other retired Duramax's
06 360k aka Hog truck
07 320k aka Shop truck
07 340k Flatbed spare welding rig
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  #28  
Old 08-24-2017, 04:16 PM
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Quote:
Originally Posted by THEFERMANATOR View Post
If you read through that efilive thread, a stand alone lml ecm/tcm combo was posted. It's not cheap at $5K, but it is designed to give lb7 type tuning to lly+ trucks. No nonsense, no bs, just straight tuning. And if it can work for an lml, it stands to reason it can be adapted to the l5p. And as to making the other modules work, I'm sure somebody like kidturbo could make a gateway to do so if there was enough interest. So yes, they could be tuned. But it won't be easy, cheap, and not for the average owner.
I would gladly pay 5K for this on a 2018 L5P if it were out there.
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  #29  
Old 08-24-2017, 05:16 PM
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Quote:
Originally Posted by catman3126 View Post
I would gladly pay 5K for this on a 2018 L5P if it were out there.


Exactly. I would go order an L5P tomorrow if someone came out with something that allowed you to "backspace/remove" some parts and tune them up a bit.

In all honesty it could me more then 5K. I'm not sure what the cutoff price would be but when you consider people are paying 50-75K for a new truck...... I'll bet they'd be willing to pay a lot to tune them.


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2003 GMC CCSB LLY
Built by me, tuned by me.

2009 ECI Diesel Truck Points Champion
2010 ECI Diesel Truck Points Champion
2011 ECI Diesel Truck Points Champion
2012 ECI Diesel Truck Points Champion

Big thanks to everyone who helps me.

Best 1/8th, 7.29, 98.6MPH (Street tires, fuel only, single Journal bearing GT42 charger) (2010)

Best 1/8th, 6.93, 104.24MPH (Street tires, fuel only, single HX60 turbo) (2016)

Best 1/8th, 6.60, 106.6MPH (Street tires, fuel only, single HX60 turbo) (2017)
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  #30  
Old 08-24-2017, 05:16 PM
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I'm not so sure I would, if there isn't tuning out in a year I'm gonna be tempted to trade my truck for a 16 lml.. I've got over 34k miles on my L5p already so in a year I could be around 80k.. 5k could by a stroker cp3 and another turbo for the lml..
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