GDE Tune (Green Diesel Tune) - Page 41 - JeepForum.com
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post #601 of 1267 Old 02-07-2013, 08:30 PM
quicksilverado
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A friend has an app for his smart phone that connects thru the OBD II port with one of these.
http://www.amazon.com/Small-Elm327-O.../dp/B005M1AVFQ


07 Grand Cherokee Limited CRD 4X4 GDE tune
00 Silverado 10 sec work truck
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post #602 of 1267 Old 02-08-2013, 07:14 AM
Zlartibartfast
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I use an OBD-to-bluetooth scanner and run Torque on my phone. Max boost I have recorded is 22 PSI. The Jeep doesn't have a true EGT sensor, so I monitor my Cat temps as a substitute for an EGT gauge. (I'm not eager to drill a hole in my exhaust manifold)
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post #603 of 1267 Old 03-18-2013, 06:55 PM
Dark_Star
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Couple of questions about this tune: first, Does the GDE tune eliminate the need for the elephant hose mod? And second, doesn't the tune put out more torque then the torque converter can handle? Thx
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post #604 of 1267 Old 03-18-2013, 06:57 PM
TurboDiesel
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ive never had an EHM

2008 CRD // GDE Eco // DPF delete // 3" intercooler // OME HD // 265 dirtytracs etc.
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post #605 of 1267 Old 03-18-2013, 07:40 PM Thread Starter
Chirpz
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Quote:
Originally Posted by Dark_Star View Post
Couple of questions about this tune: first, Does the GDE tune eliminate the need for the elephant hose mod? And second, doesn't the tune put out more torque then the torque converter can handle? Thx
YES and NO. Yes, in that your swirl motor is no longer an issue and so it does not matter if oil gets dripped onto it. Also, you can simply fix the leak with the black gasket that is mentioned elsewhere in the forum.

NO.... in that oil is still being sucked into your turbo intake. If you don't like that, then do the EHM or get a Cache Can, or a Filter.

Chirpz
2007 WK 3.0L CRD, Quadradrive II, GDE EcoTune, DPF-Delete
4xGuard Front, Rear, Belly, & Side Rails, Factory Skids
EHM MOD, Garmin Mechanic EcoHD, K&N Filter (Deleted)
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post #606 of 1267 Old 03-18-2013, 07:55 PM
Dark_Star
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Thx for the response! I don't want the oil in the turbo so looks like I will be doing the ehm! Thx
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post #607 of 1267 Old 03-19-2013, 07:44 AM
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Beware as you live in a winter climate. If the EHM freezes up (and they do) you may blow your turbo or engine seals. See other posts on the subject, it happened to another member earlier this winter. Personally I dont use one and never have in my 12 years of owning Diesels. Seen too many VW TDI's blow their turbo seals.. Oil in your intake is not a terrible thing. If you are going to do the EHM I suggest you remove it in winter.

2007 WK CRD QDII, GDE HOT tune. 275/55/18'' on Sahara's, SRT8 suspension.
2000 Jetta TDI (hers)
2006 Liberty CRD (sold)
3 VW TDI's (sold)
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post #608 of 1267 Old 03-19-2013, 09:04 AM
Dark_Star
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Awesome thxs for your post!!! I will have to do a little more research before I do this mod!
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post #609 of 1267 Old 03-19-2013, 10:12 AM
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I do not use one......

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2008 CRD QT2
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post #610 of 1267 Old 03-19-2013, 05:29 PM
LJS8510
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I don't either


2015 WK II 5.7 Overland, Offroad Group II,- 2008 WK Limited 3.0 CRD, - 2003 WJ Laredo 4.7, - 2001 WJ Laredo 4.0, - 1999 WJ Limited 4.7-
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post #611 of 1267 Old 03-20-2013, 08:59 AM
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Now that some of you have the DPF pipe deleted I'm interested in avg MPG change without the tune, with the tune, and with the pipe installed.

Just starting to weigh the addition of the tune here once I get some more $
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post #612 of 1267 Old 03-20-2013, 09:10 AM
DieselDevotion
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Quote:
Originally Posted by wanabxtrm
Now that some of you have the DPF pipe deleted I'm interested in avg MPG change without the tune, with the tune, and with the pipe installed.

Just starting to weigh the addition of the tune here once I get some more $
You can't delete the dpf without a tuner. You will throw codes and cause the truck to go into limp mode.

07 Grand Cherokee Limited 3.0L CRD QDII
89 5.9 Cummins powered F350
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post #613 of 1267 Old 03-20-2013, 10:36 AM
wanabxtrm
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Originally Posted by DieselDevotion View Post
You can't delete the dpf without a tuner. You will throw codes and cause the truck to go into limp mode.
-DD thanks I'm aware , that's why I thought this thread was a good spot to ask as the GDE seams to be the most widely used tune. I know they claim 2+ mpg boost, I figured removing the DPF had to relieve some back pressure and increase it some more. But not sure it's worth the cost over the near term, as its going to be my wife's daily vehicle (she could careless about power changes). I'm sure long term it would be.
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post #614 of 1267 Old 03-20-2013, 11:48 AM
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Quote:
Originally Posted by wanabxtrm View Post
-DD thanks I'm aware , that's why I thought this thread was a good spot to ask as the GDE seams to be the most widely used tune. I know they claim 2+ mpg boost, I figured removing the DPF had to relieve some back pressure and increase it some more. But not sure it's worth the cost over the near term, as its going to be my wife's daily vehicle (she could careless about power changes). I'm sure long term it would be.
from what i've read on the site the mpg gains are more from the tuning and not necessarily from the added tune to remove the dpf. i recognize the better performance and fuel mileage as a reason to tune, but i calculated it would take around 77,000km (assumed cost of fuel was constant) to get back my investment in fuel savings from buying just the tune, no dpf pipe. people rarely keep their vehicles long enough to ever realize a substantial benefit of doing these mods, but i understand why people would make these changes if you intend to put 500,000km on your vehicle, want additional power for towing, etc.

as i understand it, the advantage from removing the dpf is an engine that will last longer. I've done the resistor mod to address the swirl motor, which was my biggest concern. i did the EHM prior to putting the resistor on, so i may actually put that back to stock as well. i bought the dpf delete pipe, but i'm not sure i'm going to bother at this point.

2008 WK CRD Limited 4x4. Every available option package
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post #615 of 1267 Old 03-20-2013, 02:09 PM
jaje
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Don't forget there are two stages of the DPF: 1 - normal stage when it's not regenerating a deletion should get you 1-2 mpg at the most. 2 - regeneration stage is where excess fuel is sprayed in during the exhaust stroke in order to burn off the ash which reduces mpg at that time by 3-4 mpg. I'm not exactly sure how long the regen cycle is though.

'14 WK2 EcoDiesel Limited
'13 Subaru BRZ
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