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  #205  
Old 07-13-2015, 01:59 PM
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Re: green diesel engineering tune

Thanks!

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  #206  
Old 07-13-2015, 04:29 PM
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Re: green diesel engineering tune

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Originally Posted by Suns_PSD View Post
Thanks!
You're welcome.
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  #207  
Old 07-13-2015, 07:36 PM
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Re: green diesel engineering tune

Thanks for the great feedback. I'm about to pull the trigger on the tune myself and everyone's input is greatly appreciated and very valuable.

GDE, I have a question that was asked on the RAM1500 forum that you have not yet responded to regarding DEF usage and shelf life. You are generally quick to respond on all the major forums I thought maybe you just missed that new thread. (Look for "Another Positive GDE Tune Experience" if you care to reply.)

Question is basically in stock format, my Jeep has gone through a tank of DEF in around 10K miles with mixed driving. Given the vast reduction in regens with the GDE tune that you, and other users are reporting, that distance can easily increase 3-5 times to the point where I'm only using a tank of DEF every 30-40K miles or so, or roughly every 2 years based on my driving habits. That is the extreme high end of the shelf life for DEF if kept in optimal conditions so clearly something to consider.

Even prior to considering this tune, I made the decision to keep the DEF level fairly low and just add 2.5 gallons when it dropped to around 1/4 tank to make sure the DEF was kept "fresh", but even a quarter tank could theoretically last close to a year so I'm definitely interested to hear your thoughts on this. Thanks as always.
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  #208  
Old 07-13-2015, 07:40 PM
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Re: green diesel engineering tune

Quote:
Originally Posted by frall9 View Post
Thanks for the great feedback. I'm about to pull the trigger on the tune myself and everyone's input is greatly appreciated and very valuable.

GDE, I have a question that was asked on the RAM1500 forum that you have not yet responded to regarding DEF usage and shelf life. You are generally quick to respond on all the major forums I thought maybe you just missed that new thread. (Look for "Another Positive GDE Tune Experience" if you care to reply.)

Question is basically in stock format, my Jeep has gone through a tank of DEF in around 10K miles with mixed driving. Given the vast reduction in regens with the GDE tune that you, and other users are reporting, that distance can easily increase 3-5 times to the point where I'm only using a tank of DEF every 30-40K miles or so, or roughly every 2 years based on my driving habits. That is the extreme high end of the shelf life for DEF if kept in optimal conditions so clearly something to consider.

Even prior to considering this tune, I made the decision to keep the DEF level fairly low and just add 2.5 gallons when it dropped to around 1/4 tank to make sure the DEF was kept "fresh", but even a quarter tank could theoretically last close to a year so I'm definitely interested to hear your thoughts on this. Thanks as always.
From GDE:

DEF tank refill interval always aligned with the oil change interval.

http://greendieselengineering.com/Se...+Tune+&model=+
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  #209  
Old 07-13-2015, 07:43 PM
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Re: green diesel engineering tune

The DEF usage and DPF regen frequency are mutually exclusive and have no bearing on each other. The DEF usage was reduced slightly and you should achieve at least 10,000 miles on a full tank, maybe longer depending on how one drives.

We did not want to reduce DEF usage too much mainly due to it potentially going bad. Turning off the system is a bad idea in general considering resale value ans such. If the DEF system is turned off it can lead to a pump failure, system freezing in the winter and a host of other issues that could reduce longevity and that is not in our best interests for selling tunes.
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  #210  
Old 07-13-2015, 08:10 PM
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Re: green diesel engineering tune

Thanks GDE - I was under the impression that the majority of the DEF usage occurred during the regen cycle which is why I didn't understand how you could still tie consumption to oil change intervals with your tune so I appreciate the clarification on that point.

I plan to purchase the tune this week so once received and installed I'll report back to the group with my initial impressions and try and provide periodic updates.
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  #211  
Old 07-13-2015, 09:39 PM
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Third tank update:

I didn't even notice I turned 25000 on the nose when I filled up. 619.5 miles and 21.81 gallons. Gets me 28.4 hand calculated. The EVIC was optimistic showing 29.2. I'm still thrilled with the mileage.
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  #212  
Old 07-13-2015, 10:02 PM
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Re: green diesel engineering tune

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Originally Posted by mazster43 View Post
Third tank update:

I didn't even notice I turned 25000 on the nose when I filled up. 619.5 miles and 21.81 gallons. Gets me 28.4 hand calculated. The EVIC was optimistic showing 29.2. I'm still thrilled with the mileage.
What were your hand calculations before the Hot Tune?
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  #213  
Old 07-13-2015, 10:06 PM
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Quote:
Originally Posted by chadg2 View Post

What were your hand calculations before the Hot Tune?
I think my best was 25.5 city and average was around 25.
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  #214  
Old 07-14-2015, 01:03 AM
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Re: green diesel engineering tune

Got my worse tank ever, 25.17 mpg. That was a lot of idling, stuck in traffic, short town trips, and some 65mph mixed with spirited fwy driving so a bit of everything. That's probably as bad a tank as my habits would usually produce. I only have 3k miles too so things will get a bit better after 20k or so. Can't wait to have 50k miles and do a 800 mile road trip mixed 55/65 mph without refilling lol.
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  #215  
Old 07-14-2015, 01:28 PM
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Re: green diesel engineering tune

Quote:
Originally Posted by GreenDiesel View Post
The DEF usage and DPF regen frequency are mutually exclusive and have no bearing on each other. The DEF usage was reduced slightly and you should achieve at least 10,000 miles on a full tank, maybe longer depending on how one drives.

We did not want to reduce DEF usage too much mainly due to it potentially going bad. Turning off the system is a bad idea in general considering resale value ans such. If the DEF system is turned off it can lead to a pump failure, system freezing in the winter and a host of other issues that could reduce longevity and that is not in our best interests for selling tunes.
Is it an option to have DEF consumption reduced to zero and the warning systems turned off or even the gauge made to read 100% full at all times? Can we then drain the DEF system to leave it intact for future usage? Just curious.

Would the exhaust smell different in any way? Would the SCR fail in some way?

Just curious, doubt I'd pursue that option.

Thanks.
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  #216  
Old 07-14-2015, 03:14 PM
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Re: green diesel engineering tune

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Originally Posted by Roadkill View Post
Tap the upshift paddle when you're already in 8th. No need to downshift simply in order to shift back into 8th.

This works great for a small amount of speed. However, mine downshifts anyway for anything over about 5 mph. Anyone experience this?


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