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6.2L tuner?

clowe1243

By clowe1243
in Modifications, Wheels & Tires

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Rob Mugs Enthusiast

Rob Mugs

Posted
Posted
4 minutes ago, Robby James said:

Any updates on this?

Send ECM to HPTuners

HPTuners unlocks ECM

Hire tuner w/dyno

 

Should be able to handle this for a couple grand

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Whipped Trail Boss
Whipped Trail Boss

I have a 2021 6.2L TrailBoss and I have added a 3.0L Whipple Supercharger and ECU unlocked by HP Tuners. All the work and dyno tuning has been done by National Speed Inc. They have been able to squeez

Black02Silverado
Black02Silverado

What I don't understand is why everyone is upset at the cost to tune their vehicle.  Something that will last as long as you want, but think nothing about throwing $3 to 4k on wheels and tires. Then a

SILVER SLED
SILVER SLED

I think we have a language barrier.  I’m saying gradually adding hp or torque is easier on the drivetrain, and you tell me I’m wrong and then say the same thing.  I think.  

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Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted

What I don't understand is why everyone is upset at the cost to tune their vehicle.  Something that will last as long as you want, but think nothing about throwing $3 to 4k on wheels and tires. Then another $1 to 2k in tires in a few years when they wear out. 

 

Priorities I guess.  :lol:

  • Like 4
Robby James Enthusiast

Robby James

Posted
Posted
22 minutes ago, Rob Mugs said:

Send ECM to HPTuners

HPTuners unlocks ECM

Hire tuner w/dyno

 

Should be able to handle this for a couple grand

 

It looks like under a grand if you use one of the "boxed" tunes from the Predator, not as good as a dyno for your truck only but should be pretty good.

My thought Is buy an ECM for around $250 and keep the factory one for any issues that may arise add the $600 ish for the Module and VOILA😙😀

 

Rob Mugs Enthusiast

Rob Mugs

Posted
Posted
3 hours ago, Robby James said:

 

It looks like under a grand if you use one of the "boxed" tunes from the Predator, not as good as a dyno for your truck only but should be pretty good.

My thought Is buy an ECM for around $250 and keep the factory one for any issues that may arise add the $600 ish for the Module and VOILA😙😀

 

Nice.. it appears the prices have been on a decline.  So, I guess you could really do it for ~a grand.

Rob Mugs Enthusiast

Rob Mugs

Posted
Posted
3 hours ago, Black02Silverado said:

What I don't understand is why everyone is upset at the cost to tune their vehicle.  Something that will last as long as you want, but think nothing about throwing $3 to 4k on wheels and tires. Then another $1 to 2k in tires in a few years when they wear out. 

 

Priorities I guess.  :lol:

To each their own :)

 

Back before GM locked the ****** out of them, it was pretty cheap to go grab a secondhand ECM and have it tuned.  That 700 bucks really hurts, just to get things started.

  • Like 1
Transient Senior Enthusiast

Transient

Posted
Posted
On 10/18/2021 at 2:24 PM, Robby James said:

 

It looks like under a grand if you use one of the "boxed" tunes from the Predator, not as good as a dyno for your truck only but should be pretty good.

My thought Is buy an ECM for around $250 and keep the factory one for any issues that may arise add the $600 ish for the Module and VOILA😙😀

 

... like California emissions requirements.  As of now they look for tunes and auto fail you if they find one.

  • Like 1
lpg Enthusiast

lpg

Posted
Posted
On 8/4/2021 at 7:29 PM, DenaliSS said:

 

I'll echo an earlier post on user's experiences of the tunes mentioned from HPtuners, Diablosport, or others with these trucks.  

Coming from a 2003 GMC Sierra Denali, with the 6.0L/4L65, with a basic tune, where the company sent me the modified ECM and once installed, I returned my original back. Through the years of ownership, read through forum posts from different sites of user experiences and comparisons, Diablosport, HP Tuners and Blackbear named the majority of the time.

 

That said and after following the link and watching the video provided, I'm on that fence of really two choices that I know of.

Now that I recently own this 2019 LTZ, with the L87 6.2L/10 speed transmission, truck has previously installed long-tube headers and now has a S&B CAI installed. With having my truck down nearly a week for the exchange, I 'm considering buying another ECM($250), to mail in for the tuning under the vin number. 

For the long-tube headers, I need to delete the rear O2 sensor, to remove my current associated codes of P0158(O2 sensor circuit high volts/Bank 2 Sensor 2), P014A(Fuel/Air metering), where both tunes can address, as I understand. 

 

With the above in mind, would the choice break down to choose, as I've read good review history for both -

Diablosport that suit my purposes for my immediate needs for the codes and performance basics for drivability, along with smoothing out some of the shift points in the transmission?

If I had plans to add cams, new heads or supercharger type mods, I'd go HP Tuners, correct?

I have talked to a local tuner for my truck a couple months ago and the price was a bit higher for the exchange(~$1300) and would cost me an additional $1000 for the dyno-tune. 

I do like from Diablosport, that they tune my ECM and return it back. Predator 2 7222-R ($629.95)

With HP Tuners, the "L84 & L87–E90 Modified ECM Exchange Service", the exchange a tuned ECM for your original ECM ($699.99+$19.99 (mpv12 usb)). 

 

Sorry for the long post, just trying to break it all down from reading/researching, while learning about this new truck.

I know it’s been a while, but I have the Diablo tuner and it does not modify the trans. I think the trans is still locked. Programmer is just motor related

Robby James Enthusiast

Robby James

Posted
Posted
3 hours ago, lpg said:

I know it’s been a while, but I have the Diablo tuner and it does not modify the trans. I think the trans is still locked. Programmer is just motor related

You are correct Trans is locked the video states that the DFM alterations is what makes the tranny shift differently it is stated by the guy that does the dyno stuff.

lpg Enthusiast

lpg

Posted
Posted (edited)

after driving for a while, the tcm unlock will be real nice. There is alot of downshifting and some hard shifts that dont feel right, i think attributed to the disabling of dfm. Not sure if they do plan on unlocking tcm or not, but hope they do.

Edited by lpg
  • 4 weeks later...
DenaliSS Enthusiast

DenaliSS

Posted
Posted (edited)
On 10/20/2021 at 9:44 AM, Robby James said:

You are correct Trans is locked the video states that the DFM alterations is what makes the tranny shift differently it is stated by the guy that does the dyno stuff.

Thanks for the feedback and clarification, I found this out as well.  Some adjustments could be made to my 10 speed, but would need to gather those details when a date is set.

 

Unless a change in the tuner/performance world comes in the interim, as it relates to my 2019 6.2L Silverado, HPtuners will be the route I take for now and thought seriously about a supercharger install with this kind of money.  I haven't turned away completely from the latter, but the difference still in cash I can use for the suspension or exhaust.  I don't know which I dislike worst, how low the truck sits or that beautiful rattle sound from the exhaust rattle. 😒

 

The one thing that does gripe me about HPtuners, is how they charge 8 credits with the Silverado, compared to 4 credits for the Tahoe and other models outfitted with 6.2L...nice.

Edited by DenaliSS
CamGTP Senior Enthusiast

CamGTP

Posted
Posted

That's because the Tahoe and Suburban of years you are looking at still run the older E92 computer that has been out since 2014-2015. The 2019+ silverado/sierra switched to the E90 controller.

  • Like 1
Whipped Trail Boss Enthusiast

Whipped Trail Boss

Posted
Posted

I have a 2021 6.2L TrailBoss and I have added a 3.0L Whipple Supercharger and ECU unlocked by HP Tuners. All the work and dyno tuning has been done by National Speed Inc. They have been able to squeeze 580whp which is pretty close to 700hp at the crank. My truck will keep up with my 2015 C7 Corvette Stingray. To my knowledge HP Tuners has recently been able to unlock the GM 10spd tcm. My shop has confirmed it and they want to wait until HP Tuners offers more adjustability. Currently there is not much that can be done to the tcm even though it is unlocked. I have only had one problem with this setup. After about 5K miles the pulley and main shaft snapped in half while cruising on the interstate at 75mph. Whipple and National speed obviously fixed it for free as it was all still under warranty. If anyone has any questions I'd be happy to help. I'm going to attach the dyno report. 

20211115_072859.jpg

  • Like 7
  • 1 month later...
Alabama Enthusiast

Alabama

Posted
Posted

Will unlocking the ECM and using a turner void the warranty or you able to go back to factory settings before you take it in for service?

 

I have a 2021 Sierra with 6.2 gas engine 

David Lampkins Enthusiast

David Lampkins

Posted
Posted

What are the dyno numbers for a fairly stock 6.2 with just intake and exhaust? What is drivability like and if anyone has them what are before and after 0-60 and 1/4 mile times?

TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted
2 hours ago, David Lampkins said:

What are the dyno numbers for a fairly stock 6.2 with just intake and exhaust? What is drivability like and if anyone has them what are before and after 0-60 and 1/4 mile times?

Here is an article from motor trend for the performance package from GM

 

https://www.motortrend.com/how-to/chevrolet-performance-silverado-intake-and-exhaust/amp/

 

I gained .3 tenths just adding my Corsa Catback exhaust and S&B intake. 

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