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2017Sierra1500
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2017Sierra1500 Enthusiast

2017Sierra1500

Posted
Posted

Recently purchased one of these tuners and I’m wondering if anyone has experience with them? 

 

Wondering what shift points/pressures work best, along with what the difference between the jammer cai tune is and the performance? Thanks in advance

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TXGREEK Senior Enthusiast

TXGREEK

Posted
Posted
Recently purchased one of these tuners and I’m wondering if anyone has experience with them? 
 
Wondering what shift points/pressures work best, along with what the difference between the jammer cai tune is and the performance? Thanks in advance


I’ve got a 2018 6.2, mine is set on performance tune. Immediately noticed improved power and a few added mpg’s better on highway but that’s with AFM still on. My understanding, it doesn’t tune the 8speed transmissions yet only the 6speed, and just the 5.3 and 6.2 motors.


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Bash74 Enthusiast

Bash74

Posted
Posted

I have used Flashpaq, Dashpaq, Diablo and to be honest I find them not to good. For just a little bit more money Black Bear is the way to go. They have sent me multiple tunes till I got it exactly how I wanted it when towing and not towing. Either way turn off the AFM

Bash74 Enthusiast

Bash74

Posted
Posted
I’m only using it as a temporary fix to correct my tire size until I can get it dyno tuned. 
 
Any reason to turn off afm other than preference?
 
Basically preference. Some will say it's not good for the engine. On top of that I had no difference in MPG with it on.
  • 1 month later...
reihart Enthusiast

reihart

Posted
Posted
On 11/13/2018 at 3:11 PM, 2017Sierra1500 said:

I’m only using it as a temporary fix to correct my tire size until I can get it dyno tuned. 

 

Any reason to turn off afm other than preference?

 

I’ve heard it’s bad because the cylinders on a truck “gum” up or sieze up and cause a lot of damage because they aren’t ran all the time. This statement is definitely from an inexperienced person(me) but I’ve heard several shops say it’s bad for the truck.  So definitely look further into this haha

Hillwood Enthusiast

Hillwood

Posted
Posted

I hope you realize that you are voiding your warranty.

Sent from my SM-G965U using Tapatalk

  • 5 years later...
Dunkhighlander New Member

Dunkhighlander

Posted
Posted
On 11/13/2018 at 4:11 PM, 2017Sierra1500 said:

I’m only using it as a temporary fix to correct my tire size until I can get it dyno tuned. 

 

Any reason to turn off afm other than preference?

 

Running AFM can cause the lifters to fail.  I turned mine off.  I hate the AFM/ EPA crap.  It reduces the longevity of the vehicle. 

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    • jgaudet99
      Tire psi

      By jgaudet99 · Posted

      Thanks for all that information, I might purchase one and see if it will work for me, if not they may let me return it! Yes for sure the tires are definitely within limit for my truck empty, and when I do tow I'll definitely make sure to raise the rear psi for the amount of weight that's going to be on it.
    • Chuck FB
      Tire psi

      By Chuck FB · Posted

      Yes exactly, more and more these days people/companies are afraid of liability issues so its easier just to say no rather than risk putting their neck on the line.    I will say with the Autel unit or when I used it last year on my truck, it wasn't like I could choose the 2025 model year or even the 2024 model year as that option was not there to manipulate the placard pressures but had to go back to 2023 or there abouts and then it showed up as an option, odd but that was how the software was then and I can't say one way or the other now as they throw out updates every so often. I still would talk to your tire dealer though to start with and they may do it for nothing but also they may have a comment on a better unit to purchase. All I know is that one of the large tire shops in my area happens to use these Autel units for their use and set them up to use the wifi and all of that jazz for constant updating because each tire tech has one handed to them by the shop but I just plugged it into my laptop to update it and yes if one is bought it has to be registered so you can get the link to do updates and then the unit has to be updated before its even used. I am not at all techy so it took me a bit but anyway just a heads up for anything you buy, most likely it will need to be connected to a computer to access the internet to have it updated to the latest software version before you can put it to use.   If your truck is near empty, those tire pressures you listed are a very safe upper range pressures to carry the weight, both the front and rear as I know they could be run lower yet with an empty truck. And if its a trailer and not some motorcycle your going to strap onto the front of your truck on a rack, you shouldn't have a need to inflate your front tires if your at 55 front already, its the rear ones that would need more air if you have much hitch weight. 
    • jgaudet99
      Tire psi

      By jgaudet99 · Posted

      Thank you, I'll check that Autel scanner out and see if it will work for me! Ya I can see GM's point of view if they lower the psi set value for someone and the person sell's the truck and the new owner puts the factory tires back on then their could be liability issues cause the psi warning light wasn't coming on when the tires were under inflated for towing their load and then it might be able to be traced back to GM lowering it.
    • Chuck FB
      Tire psi

      By Chuck FB · Posted

      I had a similar but different response when I talked to the service manager where I bought my truck in that he said GM corporate won't allow them to lower the placard pressure setting as they would get their hand slapped but that of course they have the ability to make that change. His suggestion was simply go to a tire dealer or third party shop that is willing to reset the pressures lower. However I chose to buy a tpms tool and partly based off of this very forum as it had been proven to work on the 2024 model ( Global B system ) and while I could have paid lots for a full two way diag tool, I didn't want to spend that much and bought the recommended Autel TS 508 and it will reprogram the 2025 model and assume it should do the 2026 as well. However the tool is rather proprietary to reprogramming Autel tpms sensors so that is a function I will never use, where as a real two way scanner would have many uses but also have yearly subscriptions etc where this 508 is free updates for as long as they put updates out for the unit. In any event it worked to lower the placard pressures and I often use it to adjust my actual tire pressures although will check with a mechanical gauge as well sometimes just to make sure that tires tpms sensor isn't lying to me.    My suggestion is either buy a tool that you know will work to adjust the system or start out by getting the tire shop you bought your tires from to reset your truck and if after that you still want a unit to do it yourself, get one at that point. 
    • jgaudet99
      Tire psi

      By jgaudet99 · Posted

      Here is an image of a quick Google search about these tires on my truck and it's exactly same psi recommendation the Toyo tires company gave me!    I'm not looking for anyone else recommended psi or anything, I'm just looking to see if anyone knew a way to get rid of the factory low psi warning light, because I'm not running high psi and ruining my tires when I'm not towing! 

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