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Messages posted by: GreenDieselEngineering
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Merl,

Yes our tune will eliminate the CEL and make the CRD run a whole lot better.
Hello,

The off-road tuning option is aimed for those customers looking to delete their exhaust after-treatment system from the vehicle. Doing so won't increase the engine's power, but can gain another 1-2% in part load fuel economy.

All of our EcoDiesel tunes disable the EGR and the combustion process has been recalibrated to maximize fuel economy and minimize engine out soot production.

Any other questions just let us know.

Regards,
GDE
The torque converter lockup status isn't considered as part of the activation criteria, but it always stays locked up when you're in those gear and engine speed ranges.

Thanks,
GDE
No, but drive it a couple miles so the mileage updates on the ecm.
Billy,

The WK2 HOT tune is essentially the same as the Ram eco diesel tune, just a few differences for vehicle changes and software. It works very well.
The presentation linked below discusses the effects of removing the stock exhaust system in terms of performance. We do not advocate removing the exhaust system for obvious reasons, but there are folks that still will want to do this. In our opinion (backed up by lots of data and testing), the exhaust system is not the limiting factor on the Ram application, rather it is the turbocharger. On the plus side, the truck does sound better with exhaust removed, it just does not buy you much of anything for performance.


https://drive.google.com/file/d/0BzGOOyguKqqEbC1YaG1IVjg2b0k/view?usp=sharing
Ustuplay,

There is never any need to let the engine of the DS cool-off before shutting down - just drive it normally and shut it off when you reach your destination.

If the ECU does sense that something is too warm when shutting down, it will run the cooling fan for a prescribed amount of time.

For regen conditions:
1) Regeneration was active at the moment the key was switched off; OR
2) DPF Inlet temperature above 450°C at shutdown

Heat-soak back conditions:
3) Turbine inlet temps above 775°C for more than 4min consecutively before shutdown; OR
4) Coolant temps above 113.5°C before shutdown

The regen conditions are newly activated with the GDE Tunes. The heat soak back conditions are part of the factory tune and were instituted in order to meet the qualification requirements of the turbo supplier before production.
Continued idling will accomplish little more than throwing away some fuel.
Brambles,

The phenomenon you are describing is 100% a result of the transmission programming.

At a certain speed the transmission decides that it needs to close the torque converter lockup clutch, however when coasting like in your maneuver the engine speed is far below the trans input shaft speed (turbine speed).
In this case, the trans sends a positive torque request to the engine in order to raise up the speed before engaging the lock-up clutch. However, the by-product of this is that you feel the vehicle push ahead.

Unfortunately this is not something that we can control with the engine re-programming and is a byproduct of poor transmission tuning by FCA.
The link below contains the new flash tool we are using for all applications:

http://www.keepandshare.com/doc/7614746/gde-pgate3-user-guide-v5-pdf-767k?da=y
The engine braking feature is a useful add-on for customers that tow often or folks that drive down mountain grades. The feature is active when the following conditions are met: in gears 1-6, above 2500 rpm (as sea level) or 2750 rpm above 6000ft. elevation, and foot off the accel pedal. While the engine braking is active the turbo vanes are closed more to create higher back pressure in the exhaust manifold. This makes it harder to push exhaust out and that force acts on the pistons to help slow the vehicle down. This helps to reduce the need for vehicle brakes and reduces wear on the brake hardware.

The feature is not active in gears 7 or 8 and does not impact operation in any normal driving situation.

The engine braking feature is a useful add-on for customers that tow often or folks that drive down mountain grades. The feature is active when the following conditions are met: in gears 1-8, engine rpm above 2000 rpm, and foot off the accel pedal. While the engine braking is active the turbo vanes are closed more to create higher back pressure in the exhaust manifold. This makes it harder to push exhaust out and that force acts on the pistons to help slow the vehicle down. This helps to reduce the need for vehicle brakes and reduces wear on the brake hardware.

The feature not active in normal driving conditions.

The engine in the Colorado/Canyon for the US market is a derivative of the "Cheetah" EU5 engine that Chrysler currently uses in the JK Wrangler (starting from MY11). It differs just in the packaging of some components and the fuel system, along with a slightly different turbo.

Based on our intelligence, the ECU used on the US market vehicles will be different than that of the ones currently for sale overseas starting with the 2014MY - it is the next generation of GM's internal diesel ECU.

Once we understand what the flash support for it will be then we'll of course add it to our list of vehicles for which we'll develop a tune for.
The only way for someone to detect the tune is to start digging into why the EGR does not work but does not set a MIL. The state "emissions tests" are just checking for the presence of codes along with readiness status information that the ECU has to broadcast regarding various systems' presence and status of operation.

All our tunes broadcast the OEM part number and cal ID which is used by the dealer network for detecting the level of flash in a vehicle.
If for someone reason the tune gets overwritten (and that's an IF the dealer tool can overwrite it) there is a nominal fee ($100) to cover our setup time for reflashing the ECU.
You can find the latest installation instructions for the Ram GDE ECU at this link: Ram 1500 EcoDiesel GDE Install Instructions
You can find the latest installation instructions for the WK GDE ECU at this link: Jeep Grand Cherokee GDE Install Instructions
 
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