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Tuners and GM Engineering

JoshsSierra1500

By JoshsSierra1500
in Engines & Drivetrain

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JoshsSierra1500 Enthusiast

JoshsSierra1500

Posted
Posted

I spent a long while searching through threads last night and I am curious and have a few questions.

 

1. Can GM see if a tuner (plug in or custom i.e black bear etc) has been installed?

 

2. If the plug and plays work which ones work? Diablo intune, hypertech, hp tuners, etc?

 

Sorry if this is the millionth time this is being asked but i did not see it anywhere.

 

Thank you

Josh

WendysOrBust Enthusiast

WendysOrBust

Posted
Posted

I spent a long while searching through threads last night and I am curious and have a few questions.

 

1. Can GM see if a tuner (plug in or custom i.e black bear etc) has been installed?

 

2. If the plug and plays work which ones work? Diablo intune, hypertech, hp tuners, etc?

 

Sorry if this is the millionth time this is being asked but i did not see it anywhere.

 

Thank you

Josh

 

1. We don't know, although if there is a warranty claim on drivetrain parts GM techs have to inspect the ECU for tampering. Diablo claims there plug and play is invisible to this process, no other hand held tuners claim this.

 

2. HP-Tuners is not plug and play. The Diablo In-tune seems to be the most popular on here but after going through the Diablo thread some users experience poor shifting habits depending on options they select. It doesn't seem to be as user friendly as it should be.

 

Secret answer 3. Get a custom tune, either Black Bear or a Diablew tune (Guy names Lew uses Diablo's software and a Diablo handheld tuner to get a custom tune), or a local tuner with reputable sources.

 

General ECU tuning thread

http://www.gm-trucks.com/forums/topic/158551-2014-engine-transmission-tuning/page-41

 

Its very long and the first twenty pages are old but covers most general information.

 

Tune Review thread

http://www.gm-trucks.com/forums/topic/176032-tuned-trucks-review/

 

General Diablo Canned tuned thread

http://www.gm-trucks.com/forums/topic/172916-thoughts-on-canned-diablo-tune

iCryWheniGoPoop Enthusiast

iCryWheniGoPoop

Posted
Posted

1. Can GM see if a tuner (plug in or custom i.e black bear etc) has been installed?

Yes, they can see if they decide to look for it(with the exception of possibly Diablo)

"When do they look" is the question and my tech the other day said that they only look when GM asks them to, which is typically when a major part fails and that's not every time.

 

2. If the plug and plays work which ones work? Diablo intune, hypertech, hp tuners, etc?

Only two good routes that I know of for plug and play.

1. Black Bear which is a custom Plug and Play if you want to spend a little time doing some data logging for them. (Worth it)

2. Or Diablo. Tunes are average at best but the claim of GM not being able to see them due to some CVN masking capabilities may be worth an average tune.

 

Tough decision... Good luck in your search

 

 

 

Sent from Off Driller Side

AZRenegade Enthusiast

AZRenegade

Posted
Posted

Just to clarify a bit. Diablo tune doesn't change the CVN, that is why it is considered invisible to the casual review. But a GM authority on another site wrote that in the event of a major failure review, the logged data in the ECU is reviewed. Any parameters that are found to exceed the factory tune specifications will automatically send up a red flag that the original tune has been tampered with and the drive train warranty will be void. To cut to the chase, if you use a tuner and drive normally you probably won't need the warranty and will enjoy a properly functioning vehicle. For those owners that use the tuner to "unleash the beast" under the hood and drive accordingly, be prepared to pay for your own actions. GM will void your warranty and I can't blame them for that.

JoshsSierra1500 Enthusiast

JoshsSierra1500

Posted
  • Author
Posted

1. We don't know, although if there is a warranty claim on drivetrain parts GM techs have to inspect the ECU for tampering. Diablo claims there plug and play is invisible to this process, no other hand held tuners claim this.

 

2. HP-Tuners is not plug and play. The Diablo In-tune seems to be the most popular on here but after going through the Diablo thread some users experience poor shifting habits depending on options they select. It doesn't seem to be as user friendly as it should be.

 

Secret answer 3. Get a custom tune, either Black Bear or a Diablew tune (Guy names Lew uses Diablo's software and a Diablo handheld tuner to get a custom tune), or a local tuner with reputable sources.

 

General ECU tuning thread

http://www.gm-trucks.com/forums/topic/158551-2014-engine-transmission-tuning/page-41

 

Its very long and the first twenty pages are old but covers most general information.

 

Tune Review thread

http://www.gm-trucks.com/forums/topic/176032-tuned-trucks-review/'>http://www.gm-trucks.com/forums/topic/176032-tuned-trucks-review/'>http://www.gm-trucks.com/forums/topic/176032-tuned-trucks-review/'>http://www.gm-trucks.com/forums/topic/176032-tuned-trucks-review/

 

General Diablo Canned tuned thread

http://www.gm-trucks.com/forums/topic/172916-thoughts-on-canned-diablo-tune

Try here:

http://www.gm-trucks.com/forums/topic/176032-tuned-trucks-review/

 

 

or just scroll down to the bottom of this sections main page.

Only two good routes that I know of for plug and play.

1. Black Bear which is a custom Plug and Play if you want to spend a little time doing some data logging for them. (Worth it)

2. Or Diablo. Tunes are average at best but the claim of GM not being able to see them due to some CVN masking capabilities may be worth an average tune.

Tough decision... Good luck in your search

 

Sent from Off Driller Side

Just to clarify a bit. Diablo tune doesn't change the CVN, that is why it is considered invisible to the casual review. But a GM authority on another site wrote that in the event of a major failure review, the logged data in the ECU is reviewed. Any parameters that are found to exceed the factory tune specifications will automatically send up a red flag that the original tune has been tampered with and the drive train warranty will be void. To cut to the chase, if you use a tuner and drive normally you probably won't need the warranty and will enjoy a properly functioning vehicle. For those owners that use the tuner to "unleash the beast" under the hood and drive accordingly, be prepared to pay for your own actions. GM will void your warranty and I can't blame them for that.

Thank you everyone. Maybe ill hold off for awhile.

 

Josh

Sooperdave Enthusiast

Sooperdave

Posted
Posted

I'd rather not have any warranty issues which has kept me from getting tune. Sucks but I understand GM's side. I would just like the damn 92mph gov raised so I can at least fly around people on the interstate without hitting shut down each and every single time. LOL.

RyanbabZ71 Senior Enthusiast

RyanbabZ71

Posted
Posted

I'd rather not have any warranty issues which has kept me from getting tune. Sucks but I understand GM's side. I would just like the damn 92mph gov raised so I can at least fly around people on the interstate without hitting shut down each and every single time. LOL.

Should be higher than 92 mph (98ish)

 

If you can't "fly" around people at this speed then maybe traffic is already moving above the speed limit?

 

 

Ryan

Sooperdave Enthusiast

Sooperdave

Posted
Posted

Should be higher than 92 mph (98ish)

 

If you can't "fly" around people at this speed then maybe traffic is already moving above the speed limit?

 

 

Ryan

The combo I have has a 92mph governor. And it comes on quickly too! I only hit it a few times going out of town this past weekend. I don't drive like a demon but I do hammer down on it from time to time. :driving:

iCryWheniGoPoop Enthusiast

iCryWheniGoPoop

Posted
Posted

Wtf? What do you think it is that cuts it to 92? I cruise at only 7mph below that down the interstate.

 

 

Sent from Off Driller Side

glcbn Enthusiast

glcbn

Posted
Posted

Should be higher than 92 mph (98ish)

 

If you can't "fly" around people at this speed then maybe traffic is already moving above the speed limit?

 

 

Ryan

 

Yep. Mine is also right around 98. I've had it to 97 and didn't hit the limiter.

 

Yeah, kinda scary if you have to go 92 in order to pass someone. :noway:

iCryWheniGoPoop Enthusiast

iCryWheniGoPoop

Posted
Posted

 

Yep. Mine is also right around 98. I've had it to 97 and didn't hit the limiter.

 

Yeah, kinda scary if you have to go 92 in order to pass someone. :noway:

Really depends on the situation. Personally I try to suck the headlights out of any vehicle I pass.

 

 

Sent from Off Driller Side

newdude Senior Enthusiast

newdude

Posted
Posted

Yes dealers can pull calibrations for ECM if necessary. They screenshot the calibrations and email them to GM. GM calibrations are of specific number sets. Anything that looks not GM gets flagged. Dealers are only really required to inspect and pull calibrations if there is a hard part failure of the engine (spun bearing, rod through the block, etc.).

Sooperdave Enthusiast

Sooperdave

Posted
Posted

Wtf? What do you think it is that cuts it to 92? I cruise at only 7mph below that down the interstate.

 

 

Sent from Off Driller Side

Must be something with the drivetrain is all I can say. The GY LS-2 tires have a S speed rating so they are safe to 112mph.

iCryWheniGoPoop Enthusiast

iCryWheniGoPoop

Posted
Posted

What is your load out/options on truck? I'm just curious... I may go pull calibration on a similar truck.

 

 

Sent from Off Driller Side

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