green diesel engineering tune - Page 32 - Jeep Garage - Jeep Forum

Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > 2014+ Jeep Grand Cherokee Ecodiesel 3.0

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #373  
Old 10-05-2015, 11:11 PM
Member
 
Join Date: Nov 2014
Posts: 78
Thanks: 0
Thanked 58 Times in 25 Posts
Rep Power: 4125
GreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond repute
Re: green diesel engineering tune

Pedal mapping is a balancing act. You want solid, quick response but also want the best fuel efficiency. A very aggressive pedal tends to sacrifice city fuel economy significantly in favor of the fun factor. We worked to optimize response with minimal fuel economy penalty.

We can support custom tune options if one wants to swing the pendulum one way or the other. I would venture to guess we could further improve city fuel economy by at least 1 mpg by deadening the pedal. Some days it is fun to be a fuel miser and see how high it will go and other days it is hammer down to finish off the stock Goodyear tires so we can get a new set before winter hits.

Reply With Quote
Sponsored Links
Advertisement
 
  #374  
Old 10-06-2015, 08:20 PM
Member
My Jeep: 2014 3.0L WK2
 
Join Date: Aug 2014
Location: Western Wisconsin
Posts: 428
Thanks: 143
Thanked 30 Times in 23 Posts
Rep Power: 1368
chadg2 is on a distinguished road
Re: green diesel engineering tune

No thank you on the very last part. I like what your doing now. The very best fuel mileage with the best possible pedal response. I just wasn't sure how the new pedal map would react to very slow stop and go traffic. I don't see much of this in my travels, but every so often it shows it's ugly head. Thanks for the support on our Ecodiesels. Also can we have our transmissions updated(flashed) without messing with the Hot Tune? I see the latest transmission update corrects some shifting issues I currently have. I've never had my transmission flashed after July 2014. Thanks.
Reply With Quote
  #375  
Old 10-06-2015, 09:53 PM
Member
 
Join Date: Nov 2014
Posts: 78
Thanks: 0
Thanked 58 Times in 25 Posts
Rep Power: 4125
GreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond reputeGreenDiesel has a reputation beyond repute
Re: green diesel engineering tune

The trans has its own ecm and you can get service updates on it as desired.
Reply With Quote
The Following User Says Thank You to GreenDiesel For This Useful Post:
  #376  
Old 11-08-2015, 11:29 AM
Member
My Jeep: 2014 3.0L WK2
 
Join Date: Apr 2014
Location: New Jersey
Posts: 158
Thanks: 24
Thanked 19 Times in 16 Posts
Rep Power: 1207
stician is on a distinguished road
Re: green diesel engineering tune

5000 mile update after GDE tune. No issues! Now the Jeep feels normal and could use more power!!
__________________
2014 Limited / Luxury II pkg / GDE tune
Reply With Quote
  #377  
Old 11-08-2015, 01:54 PM
Member
 
Join Date: Mar 2015
Posts: 566
Thanks: 52
Thanked 104 Times in 71 Posts
Rep Power: 1391
farfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond repute
Re: green diesel engineering tune

Quote:
Originally Posted by GreenDiesel View Post
The trans has its own ecm and you can get service updates on it as desired.
Unless they wrap the TCM TSB into an ECM/TCM RRT in which both modules get flashed regardless or not if you want them to. Damn updates, why can't I just get tyranny updates downloaded via uConnect and flash them to appropriate modules via my steering wheel buttons lol. Oh yeah, this ain't no Tesla...
__________________
'15 GC 4x4 Summit - GDE Hot Tune, Berger N54 ccv catch can, 4300k Philips HID fogs, VLED TRITON V3 LED brake lights
Reply With Quote
  #378  
Old 11-08-2015, 02:11 PM
Senior Member
 
Join Date: Sep 2013
Posts: 1,328
Thanks: 49
Thanked 165 Times in 133 Posts
Rep Power: 2933
Roadkill has a reputation beyond reputeRoadkill has a reputation beyond reputeRoadkill has a reputation beyond reputeRoadkill has a reputation beyond reputeRoadkill has a reputation beyond reputeRoadkill has a reputation beyond reputeRoadkill has a reputation beyond reputeRoadkill has a reputation beyond reputeRoadkill has a reputation beyond reputeRoadkill has a reputation beyond reputeRoadkill has a reputation beyond repute
Quote:
Originally Posted by farfromovin View Post
Oh yeah, this ain't no Tesla...
Thank god. I wouldn't want to worry about having a vehicle whose engineers could not determine how to prevent 175 W of continuous vampire load while the vehicle is "off" from fatally discharging the battery. Or from having the same thing happen if you use too long of an extension cord when you leave your Tesla plugged in and parked in a garage for two weeks.

$40k replacement cost for the cacked battery packs--not covered by warranty.

Yep, that's superlative design there. None of the Jeep issues I have read about can compare to Tesla's design failures.
Reply With Quote
  #379  
Old 11-08-2015, 03:22 PM
Member
 
Join Date: Jul 2014
Posts: 247
Thanks: 21
Thanked 40 Times in 30 Posts
Rep Power: 1206
definn12 has disabled reputation
Quote:
Originally Posted by GreenDiesel View Post
The trans has its own ecm and you can get service updates on it as desired.
Can the PCM receive its own updates or will they ecm get overwritten if a PCM update is applied?
Reply With Quote
  #380  
Old 11-08-2015, 04:20 PM
Member
 
Join Date: Mar 2015
Posts: 566
Thanks: 52
Thanked 104 Times in 71 Posts
Rep Power: 1391
farfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond repute
Re: green diesel engineering tune

Quote:
Originally Posted by definn12 View Post
Can the PCM receive its own updates or will they ecm get overwritten if a PCM update is applied?
Each of the modules are flashed independently of each other.
__________________
'15 GC 4x4 Summit - GDE Hot Tune, Berger N54 ccv catch can, 4300k Philips HID fogs, VLED TRITON V3 LED brake lights
Reply With Quote
  #381  
Old 11-12-2015, 03:39 PM
New Member
 
Join Date: Sep 2015
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
mrbillishere is on a distinguished road
Re: green diesel engineering tune

Hi guys, please help me clarify my understanding about the optional DPF regen message display feature. I understand that it will inform you of all regens, active or passive.

But what I don't know is what the active regen behavior is like when you don't take the regen-messages option on your tune. I want to say that for active regens (only) the messages informing you to 'drive at highway speeds' will still pop up on the EVIC as they do today, with the OEM software. Is that correct?
Reply With Quote
  #382  
Old 11-12-2015, 04:22 PM
Member
 
Join Date: Jul 2014
Posts: 247
Thanks: 21
Thanked 40 Times in 30 Posts
Rep Power: 1206
definn12 has disabled reputation
Quote:
Originally Posted by mrbillishere View Post
Hi guys, please help me clarify my understanding about the optional DPF regen message display feature. I understand that it will inform you of all regens, active or passive.

But what I don't know is what the active regen behavior is like when you don't take the regen-messages option on your tune. I want to say that for active regens (only) the messages informing you to 'drive at highway speeds' will still pop up on the EVIC as they do today, with the OEM software. Is that correct?
Passive regens dont give notifications. They seem to happen every 100-200 miles without the tune. People have been monitoring the passive ones with obd2 readers and the torque app.

In the OEM software/ without a tune, if you are getting a notification about a regen it usually means it's almost completely full. People have gone into limp mode if they don't get to high way speeds when that message appears - on the OEM/ factory settings.

The GDE guys offer it as a courtesy in the tune they provide so that you can know when the filter has reached a level that requires regen.

I've found it super helpful because I can time out when they are going to occur. The regens are the biggest killer of fuel economy and if you stop in the middle of one it'll surprise you again later on
Reply With Quote
  #383  
Old 11-12-2015, 06:50 PM
Member
My Jeep: 2012 WK2
 
Join Date: Mar 2012
Posts: 937
Thanks: 41
Thanked 43 Times in 39 Posts
Rep Power: 1232745
2012 Summit has a reputation beyond repute2012 Summit has a reputation beyond repute2012 Summit has a reputation beyond repute2012 Summit has a reputation beyond repute2012 Summit has a reputation beyond repute2012 Summit has a reputation beyond repute2012 Summit has a reputation beyond repute2012 Summit has a reputation beyond repute2012 Summit has a reputation beyond repute2012 Summit has a reputation beyond repute2012 Summit has a reputation beyond repute
Re: green diesel engineering tune

For a better understanding:

Active = fuel is injected into the exhaust stroke strictly for the purpose of increasing exhaust gas temperatures (EGT's) in order to get to the temperature necessary to burn the soot out of the diesel particulate filter (DPF).

Your truck will regenerate (active) when the DPF soot level reaches 65%. This will likely occur every 100-300 miles. You will only see the notice on the EVIC if the soot level reaches 80-90% due to uncompleted regens.

Active self-regeneration occurs when there is not sufficient heat in the exhaust to convert all the carbon being collected in the DPF. Exhaust temperatures are raised by injecting a small amount of fuel upstream of the Diesel Particulate Filter.
The resulting chemical reaction over the DOC raises exhaust gas temperatures high enough to oxidize the carbon from the filter. This is all done without any operator intervention.

Passive = the engine is working hard enough under its own power that the EGT's are hot enough to keep the regeneration of the DPF in process, there is no extra fuel burned as it is not necessary.

Based on my observations, you will not see EGT’s hot enough for passive regeneration at unloaded highway speeds. The EGT’s are actually quite low when cruising on the highway unless you are towing a heavy load,are carrying a full payload, or driving hard.

The truck's programming will make many repeated attempts to regenerate the DPF, from a high soot mass level of 65% down to <10% when a cycle is complete. If your trip is too short and the engine is then shut off, or the truck is put in park with the engine idling, an active regeneration process stops (at whatever soot level the DPF is at). The next drive cycle when the DPF again reaches 65% soot mass the whole process starts all over again. If you are going on a road trip the complete cycle will happen many times over...up to 65%...regen...down to <10%...over and over again.
Reply With Quote
The Following 2 Users Say Thank You to 2012 Summit For This Useful Post:
  #384  
Old 11-13-2015, 01:50 PM
New Member
 
Join Date: Sep 2015
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
mrbillishere is on a distinguished road
Re: green diesel engineering tune

Thanks for the clarifications @2012 Summit, they way you put it definitely helped clarify my usage of the terms.

I wasn't aware that under normal highway conditions the EGTs were just too low to support passive regens but now that you say this, it makes a LOT of sense based on some of the crap that happened to me over the summer. Specifically, I was driving at highway speeds for hours and hours, for a week straight, and then lo and behold I got the 'DPF almost full' message on my EVIC the following day as I was driving around town. I was floored. Regardless, I still think the jeep was whacked out because the active regenerations that you described should have had ample opportunity to function in the background. And in a matter of days I had to take it in for service due to the incorrect DEF downhill spiral that's been discussed in other threads. Ultimately the replacement of my SCR put me right, I hope.

But back to my original question. Essentially, what I want to know is if we don't take the optional feature on the GDE tune that reports on all regens, we are still going to be informed if/when the DPF is almost full, as we do now. That's what I wanted to confirm. So, with the GDE tune, and without the optional 'show all regens' bit, the car will still display the 'DPF almost full' message on the EVIC (example attached) when needed. Correct?
Attached Images
File Type: jpg IMAG0670.jpg (119.0 KB, 38 views)
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
2012 SRT8 Dyno Tune VS Stock Tune & Race Gas Mix jim383 Engine Performance/Intakes/Exhausts 2 03-01-2015 06:30 PM
2012 SRT8 Dyno Tune VS Stock Tune & Race Gas Mix jim383 Grand Cherokee SRT - WK2 3 02-25-2015 09:57 AM
CRD diesel mpg= 26 hwy, does the Green Diesel tune increase this? KKielisch Liberty-KJ and KK 5 10-14-2013 09:08 PM
Grern diesel tune vs custom spooling tune fastlane26 Diesel Powered WK Grand Cherokee 2 11-11-2012 11:34 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 10:36 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by FCA US LLC. Chrysler, Dodge, Jeep, Ram, Mopar and SRT are registered trademarks of FCA US LLC.