Jump to content

Recommended Posts

Posted (edited)

I did.... shifted like garbage. Not enough adjustability for that stuff yet to do anything like that. That's 8 speed though... 6 should be no problem to do whatever.

 

Sent from my SM-G900W8 using Tapatalk

Edited by 1994Vmax
Posted

Yeah mine shifted awful to and Justin has tuned on mine for a while now and turned it off and I was amazed at what a difference it makes. I was wondering how many has done so when tuning the transmission.

 

RT

Posted

I have done some minor tuning on my 20116's transmission. I reduced the upshift times by 30% and the downshift times by 35%. I turned off the upshift and downshift torque management and the truck shifts almost perfect. It will have to do until HP Tuners releases the pressure tables. As of now it is firm on every shift and gets after it on the shift time side. To be honest I could probably reduce the up and down shifts by 40% and it will be perfect.

 

I wish GM would take some cues from the Germans. My wifes Audi has a 8spd auto in it, under normal drive mode it shifts quick with no delay at all and just some slight firmness. Put into sport mode and the shift times are reduced in half and in snaps the shifts in place each time.

Posted (edited)

I have done some minor tuning on my 20116's transmission. I reduced the upshift times by 30% and the downshift times by 35%. I turned off the upshift and downshift torque management and the truck shifts almost perfect. It will have to do until HP Tuners releases the pressure tables. As of now it is firm on every shift and gets after it on the shift time side. To be honest I could probably reduce the up and down shifts by 40% and it will be perfect.

 

I wish GM would take some cues from the Germans. My wifes Audi has a 8spd auto in it, under normal drive mode it shifts quick with no delay at all and just some slight firmness. Put into sport mode and the shift times are reduced in half and in snaps the shifts in place each time.

LOL on the European Builders.... Hell my wife's Honda Pilot and my Daughters Civic shift better than the truck did until this last change and they are both Merican made!

 

RT

Edited by 07Softail
  • 2 weeks later...
  • 2 weeks later...
Posted

Instead of digging through 57 pages, I'm hoping someone can answer my question. I'm thinking about picking up a 2016 w/ the 8-speed. I have HPT with an available license. Are there any components that I won't be able to edit with the tune? Is the 8-speed fully supported with the newest version of HPT?

Posted (edited)

I have HPT and upon recommendation of how much of a buggy pos it is I haven't upgraded to the latest.. they were supposed to increase 8 speed support though which I want too. But in 2 weeks time they have revised the 3.2 release 25 times and it's still causing guys issues... so I will wait a bit longer. The current 8 speed stuff isn't hardly worth playing with.

 

Sent from my SM-G900W8 using Tapatalk

Edited by 1994Vmax
  • 2 weeks later...
Posted (edited)

My 2014 5.3 silverado has a supercharger kooks headers kooks exhaust and a cai and pcm dyno tuned my truck made 540 and 560 at the crank truck. Long story short my stick piston rods broke and came thru the block. My mechanic said the truck was running way to rich and pistons lost the lubrication due to it running to rich

Edited by Jb716
Posted

My 2014 5.3 silverado has a supercharger kooks headers kooks exhaust and a cai and pcm dyno tuned my truck made 540 and 560 at the crank truck. Long story short my stick piston rods broke and came thru the block. My mechanic said the truck was running way to rich and pistons lost the lubrication due to it running to rich

My 2014 5.3 silverado has a supercharger kooks headers kooks exhaust and a cai and pcm dyno tuned my truck made 540 and 560 at the crank truck. Long story short my stick piston rods broke and came thru the block. My mechanic said the truck was running way to rich and pistons lost the lubrication due to it running to rich

That's sucks man. Hate to hear about the bad luck

 

Sent from my SAMSUNG-SM-G870A using Tapatalk

  • Like 1
Posted

 

That's sucks man. Hate to hear about the bad luck

 

Been a the shop now putting another 5.3 in it and adding supercharger and headers to it until I have money to built a a vette ls3

  • Like 1
Posted

My 2014 5.3 silverado has a supercharger kooks headers kooks exhaust and a cai and pcm dyno tuned my truck made 540 and 560 at the crank truck. Long story short my stick piston rods broke and came thru the block. My mechanic said the truck was running way to rich and pistons lost the lubrication due to it running to rich

Posted

Yeah, making nearly 600 hp is one thing. Getting the beast to live a long time is another. Don't ask me how I know haha. Sorry for the bad luck man. Oh and btw old broken internals make for some good furniture and accessories for a man cave.

  • Like 2
Posted

 

 

Yeah, making nearly 600 hp is one thing. Getting the beast to live a long time is another. Don't ask me how I know haha. Sorry for the bad luck man. Oh and btw old broken internals make for some good furniture and accessories for a man cave.

crank is going to be a coffee table

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Latest Articles

  • Posts

    • The whole story is false. The screw is there as a temporary fix to allow the pump to even turn on. When the nozzle is returned the pump shuts off.. At this point people are just being punked   https://youtu.be/1DtlaEuHXAA?si=06mrRmw9HLUwdeRk   https://www.facebook.com/share/v/1CyRZdsaSc/ https://www.facebook.com/share/r/1DxV1Hyrqi/       SNOPES: https://www.facebook.com/share/p/19HPYUnRik/
    • Follows the motif on the Sierra EV.  Satin finsh to the lower bumper area, painted above:   Elevation       Denali      
    • Not exactly what I was hoping for, but I do like it. I wonder if they'll bring back Smokey Quartz Metallic? 🤔 https://gmauthority.com/blog/2026/06/here-is-the-all-new-2027-gmc-sierra-1500/
    • Whoever greenlighted the work truck matte black front bumpers on every trim but the AT4X should be fired!  I was hoping that was an AI mistake, but just realized they were on every model of the 2027 Silverado too.     Some parts of the interior do look premium, but the Denali Ultimate dashboard looks like an afterthought.  At least they appear to have lost the microfiber the high end Silverado models showed, but the '27 High Country dash looks better than the Denali.  
    • New member here. I am researching a read-first event-recorder concept for late-model GM V8 trucks. This is not a sales post. There is no product link, price, preorder, or mailing list. I am trying to determine whether the underlying problem is real before building anything.   Has your truck ever had a brief problem such as: - rough running or a momentary misfire - an oil-pressure warning or unusual pressure event - reduced power or a brief stall - a U-code or lost-communication problem - a symptom that disappeared before the dealer or independent shop could reproduce it   If so, I would appreciate the following details: - year, model, engine, and mileage - what happened and under what conditions - whether a DTC and useful freeze-frame data were stored - whether the shop was able to reproduce it - what the eventual confirmed repair was, if known - what additional information would have helped the diagnosis   The concept being evaluated is a removable leave-in recorder that continuously retains a rolling window from before and after an event. It would not tune, reflash, clear codes, or change the vehicle calibration.   I am also not claiming that it could predict lifter failure or see every internal ECM variable.   The real question is whether continuous event history would add enough useful evidence beyond freeze frame, GDS2, and existing scan tools — or whether it would simply be another unnecessary gadget.   For owners and technicians, which problem would make something like this genuinely useful: 1. intermittent misfire or AFM/DFM-related behavior 2. oil-pressure events 3. lost communication or electrical faults 4. none of the above Please be blunt. Negative feedback is just as useful as positive feedback.
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...