Green Diesel Tune Drivability

[Terpsmandan]

With all this said, how do you all that have the tune feel about the tune's correlation to reliability and longevity? Should I throw caution to the wind and tune it or stay stock until later when near the 100k mile mark? Thanks in advance to anyone providing their input...

I just rolled over 75k. Dropped the tune in at 3k. No issues. Much more fun to drive. 0-60 in under 6 sec on 37’s with a mopar lift. Also got nicked a few days ago because I pulled out to pass on a two lane, hammered the throw and the sheriff clocked me at 82. Still annoyed and plan to have a conversation with the justice about being completing my pass as quickly as possible.

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[Gomer Pyle]

I just rolled over 75k. Dropped the tune in at 3k. No issues. Much more fun to drive. 0-60 in under 6 sec on 37’s with a mopar lift. Also got nicked a few days ago because I pulled out to pass on a two lane, hammered the throw and the sheriff clocked me at 82. Still annoyed and plan to have a conversation with the justice about being completing my pass as quickly as possible.

Haha...my days of endless speeding tickets, brakes and tires are pretty much over. The reduced soot load, HPFP preservation strategy and increased mpg are the main appeals. So has anyone verified that a GDE tuned PCM won't leave a 'footprint' on the Jeep's archives once I switch back over to the OEM PCM for service, if ever needed? I plan to do all my own preventative maintenance so compromising repairs for major motor & drivetrain components is all I'm worried about. Thanks for sharing...this 3.0 really seems to be the perfect powerplant for these JLU's and it seems lots of folks overthink & obsess over every little thing.

 

[Terpsmandan]

Can’t attest to whether it leaves a “footprint” or not. I read that someone put a tune on a challenger and blew the motor up and Stellantis could “see” that a tune had been installed. YMMV

 

[CO2Wrangler]

Haha...my days of endless speeding tickets, brakes and tires are pretty much over. The reduced soot load, HPFP preservation strategy and increased mpg are the main appeals. So has anyone verified that a GDE tuned PCM won't leave a 'footprint' on the Jeep's archives once I switch back over to the OEM PCM for service, if ever needed? I plan to do all my own preventative maintenance so compromising repairs for major motor & drivetrain components is all I'm worried about. Thanks for sharing...this 3.0 really seems to be the perfect powerplant for these JLU's and it seems lots of folks overthink & obsess over every little thing.

I was TOLD by a tech that technically they can tell something was up if you switch the PCM back to the stock one because it throws some internal fault because the mileage of the vehicle in other modules doesn't match that of the PCM you just plugged back in.

No idea if that's true but sounds reasonable.

Also, it still doesn't VOID any warranty. It does however put you in a tough spot trying to explain power train failure should they find out you're tuned, and that gets expensive because they can deny those specific coverages related to your modification.

 

[Gomer Pyle]

My hope is that the guys over at GDE are from the OEM motor's original development team (or something like that) and have been putting in the time for years to make this engine even better and more reliable despite the factory settings and extra EPA crap these motors must endure...thanks for all the feedback

 

[Ratbert]

Also got nicked a few days ago because I pulled out to pass on a two lane, hammered the throw and the sheriff clocked me at 82. Still annoyed and plan to have a conversation with the justice about being completing my pass as quickly as possible.

Good luck with that. I remember sitting through a ticket remediation class as a kid where a girl was schooled that no, it wasn't legal to speed just because you're passing.

 

[rickinAZ]

my question is to GDE tune or not to tune while in warranty period?

Good question. I had the whole Banks setup but removed my Derringer when a friendly dealer prewarned me that they'd have to disclose it if it came to a major claim and the Derringer was still present. [I don't blame them; they make their living under the Jeep franchise.] The iDash/PedalMonster are obviously not an issue. I have a full year left on my power train warranty and an emissions warranty (important for DPF replacement) that has four years remaining.


As a piggyback device, the Derringer leaves no direct trail of breadcrumbs, some things like "maximum boost achieved" are indicative that something is amiss, and It is obviously physically detectable. The GDE is physically invisible, but I suspect that it is easy to detect its presence in the ECU. A forum member posted that a GDE representative said that their product is undetectable. How can that be?

 

[Gomer Pyle]

Good question. I had the whole Banks setup but removed my Derringer when a friendly dealer prewarned me that they'd have to disclose it if it came to a major claim and the Derringer was still present. [I don't blame them; they make their living under the Jeep franchise.] The iDash/PedalMonster are obviously not an issue. I have a full year left on my power train warranty and an emissions warranty (important for DPF replacement) that has four years remaining.


As a piggyback device, the Derringer leaves no direct trail of breadcrumbs, some things like "maximum boost achieved" are indicative that something is amiss, and It is obviously physically detectable. The GDE is physically invisible, but I suspect that it is easy to detect its presence in the ECU. A forum member posted that a GDE representative said that their product is undetectable. How can that be?

I'm about to the thinking that the engineers at GDE are well-versed in improving various conditions that can lead to premature wear of these motors...they're efforts are directed at making these things better. Also, I'm actually not so much interested in the performance boost but so be it if it's a side-effect of proper tuning for reduced soot load & HPFP longevity. I'm curious, too, about a GDE rep claiming their tune is undetectable BUT I think he's referring to the stock PCM being reinstalled back into the Jeep prior to any major service. My Jeep is a 2021 and the motor & powertrain warranty expires in late 2025 / early 2026. I really do love this powerplant for the Jeep & it's certainly a roll-of-the-dice but I'm about ready to do so because of the upside / improvements. I'm shaking those dice but haven't let them go...yet! Cheers!

 

[ALeeL]

My hope is that the guys over at GDE are from the OEM motor's original development team (or something like that) and have been putting in the time for years to make this engine even better and more reliable despite the factory settings and extra EPA crap these motors must endure...thanks for all the feedback

I hate to tell you this bud, but the OE's do not tune for reliability as their main concern. I have worked for several diesel and truck manufacturers over the years and can tell you that these engines are tuned for emissions above all else. If you can't meet emissions then you can't sell your vehicles.

This is why they will allow dirty air to flow into your engine even though it reduced it's lifespan and reliability, because it helps them meet emissions. This is why they had to switch to a CP4 pump instead of staying with the reliable CP3, because the new emissions standards required higher fuel pressures even though it reduced the reliability of the engine. Same goes for the electronically controlled injectors, variable geometry turbo and so on. All added to meet emissions at the expense of reliability. Heck, even the changes in oil are due to meet lower emissions and reduce ash in the DPF even though they may cause more wear on the engine than previous API's.

Even some of the fuel mapping is like this. I can't say this for every vehicle, but I can for the ones that I have tuned on my laptop. I saw many things done that reduced reliability in the long run, but were done to meet emissions or extend the life of the emissions equipment versus the engine. The chances of the manufacturers getting sued by the EPA due to their tuning harming emissions equipment or emitting more more than allowed is many times greater than getting sued from a consumer because of tuning that will cut the life of the engine over 50-100k miles.

 

[Gomer Pyle]

I hate to tell you this bud, but the OE's do not tune for reliability as their main concern. I have worked for several diesel and truck manufacturers over the years and can tell you that these engines are tuned for emissions above all else. If you can't meet emissions then you can't sell your vehicles.

This is why they will allow dirty air to flow into your engine even though it reduced it's lifespan and reliability, because it helps them meet emissions. This is why they had to switch to a CP4 pump instead of staying with the reliable CP3, because the new emissions standards required higher fuel pressures even though it reduced the reliability of the engine. Same goes for the electronically controlled injectors, variable geometry turbo and so on. All added to meet emissions at the expense of reliability. Heck, even the changes in oil are due to meet lower emissions and reduce ash in the DPF even though they may cause more wear on the engine than previous API's.

Even some of the fuel mapping is like this. I can't say this for every vehicle, but I can for the ones that I have tuned on my laptop. I saw many things done that reduced reliability in the long run, but were done to meet emissions or extend the life of the emissions equipment versus the engine. The chances of the manufacturers getting sued by the EPA due to their tuning harming emissions equipment or emitting more more than allowed is many times greater than getting sued from a consumer because of tuning that will cut the life of the engine over 50-100k miles.

Thanks for the reply...I get it, I really do. I was referring to the guys over at GDE who are tuning these motors for better performance and reliability. I heard somewhere that some of them were part of the OEM motor & drivetrain team at some point and have since formed GDE and made efforts to improve these motors & drivetrain over the OEM configuration?

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