post #856 of Old 08-10-2013, 07:50 PM
TurboDiesel
Registered User
2008 WK 
 
Join Date: Apr 2011
Location: langley
Posts: 2,222
yea i dont get nearly what you guys get
im strictly city driving and get like 19-20mpg

245/70 tires
2" RC lift
no steel skids
no air dam


2008 CRD // GDE Eco // DPF delete // 3" intercooler // OME HD // 265 dirtytracs etc.
TurboDiesel is offline  
post #857 of Old 08-10-2013, 10:58 PM
DanG28
Registered User
 
Join Date: Aug 2013
Location: St Clair Shores
Posts: 28
As far as I know my vehicle is bone stock. 2007 CRD QDII. The reading on my EVIC last tank was 24.6, but I actually went 382 miles on 14.1 gallons = 27 MPG, so the computer is a little off. When I bought it the EVIC read 19.7 MPG, so Ive been able to manage about 5 MPG better than whoever was driving it previous to me.
DanG28 is offline  
post #858 of Old 08-12-2013, 08:49 AM
Q500
Registered User
 
Join Date: Jun 2012
Location: Olathe
Posts: 17
Just did 1700 miles in 2 days colorado to Michigan averaged 27 on the first 3 tanks almost ran out in the middle of Kansas on dirt. Ran for almost twenty miles on "0 miles until empty" long story but I sure wasn't planning on doing that managed 517 miles on one tank. Last tank coming into Michigan I only got 24mpg I'm blaming that on dpf regen. Got the delete tune and waiting on a pipe. Eco tune stock running on 245's. Would love to see a straight pipe tune to delete those damn cats and possible bigger turbo. I tow a lot in the mtns with a 06 cummins, upgraded the turbo and exhaust and gained 3mpg towing, close to 30% gain with no tuning. Would love to see what gains the jeep would do.
Q500 is offline  
post #859 of Old 08-12-2013, 08:52 AM
Q500
Registered User
 
Join Date: Jun 2012
Location: Olathe
Posts: 17
Never trust the evic I've never gotten below 20 mpg and it has never read over 20.5 FYI always hand calculate if you want the truth.
Q500 is offline  
post #860 of Old 08-12-2013, 05:00 PM
Chucknav
Registered User
2007 WK 
 
Join Date: Jun 2010
Location: WV
Posts: 40
Quote:
Originally Posted by RMC_xj View Post
24 MPG before the tune is quite good. I was sitting around 22 pre-tune. The best I've gotten is 27 MPG over 489 highway miles. Outside temp was about 80-90 f. I was doing 45 for a 60 mi stretch, so it's not overly realistic. The best realistic tank I've gotten is 25 MPG at 65 mph. All my numbers are GPS verified.

I've found that beyond 110 kph (68mph), for every 10 kph faster I drive, I drop just over 1 MPG. I definitely think that 30+ MPG is possible with a stock vehicle and ECO tune, but at 45 mph, nobody's got time for that.
Yes, I would be happy with 24 MPG, but I usually get anywhere from 20 to 22, depending on driving style and speed. (24 mpg is the exception) This is with 31.5 inch tires and a 2" lift. I know speed kills the mileage, especially with those 3.73 gears. That's why I try to stay under 70 mph whenever possible. I am hoping the Eco-tune will bump me up to 23-25 mpg consistently. I would be pleased with that.

2007 WK Limited CRD QDII
2" RR Lift
255/75-17 Duratracs
GDE Eco-Tune

Last edited by Chucknav; 08-13-2013 at 07:11 AM.
Chucknav is offline  
post #861 of Old 08-12-2013, 05:06 PM
Chucknav
Registered User
2007 WK 
 
Join Date: Jun 2010
Location: WV
Posts: 40
Unfortunately, I am working in wisconsin for 2 weeks and my wife is driving my jeep while I'm gone, so it will be a while before I can do my own MPG validation. She does not know how to drive to optimize mileage.

2007 WK Limited CRD QDII
2" RR Lift
255/75-17 Duratracs
GDE Eco-Tune
Chucknav is offline  
post #862 of Old 08-13-2013, 03:46 PM
Smacker
Registered User
2007 WK 
 
Join Date: Aug 2012
Location: Cumberland
Posts: 6
Installed GDE Tune last week. Asked wife if she could stay between 65-70mph so I can get a feel for what the mileage might be. She responds ", but I have the cruise set at 72" I feel your pain...

2005 Liberty Limited CRD 160K GDE Ecotune Mine
2007 Grand Cherokee Limited CRD 140K GDE Ecotune,The Brides
Smacker is offline  
post #863 of Old 08-13-2013, 03:52 PM Thread Starter
Chirpz
Registered User
2007 WK 
 
Join Date: Aug 2009
Location: Battle Ground
Posts: 1,322
Quote:
Originally Posted by Smacker View Post
Installed GDE Tune last week. Asked wife if she could stay between 65-70mph so I can get a feel for what the mileage might be. She responds ", but I have the cruise set at 72" I feel your pain...
sounds like "the little ole lady from Pasedena"

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)
Chirpz is offline  
post #864 of Old 08-16-2013, 11:54 AM
Dusty280
Registered User
2008 WK 
 
Join Date: Nov 2007
Location: Green Bay, WI
Posts: 78
I just installed my tune on Wednesday. Only around town so far. Will be taking a trip this weekend. seems like the lag on starting from a stop has disappeared. the jeep seems to "coast" more. I find I am having to use more brakes coming up to stop signs and lights. Just first impressions so far. Will know more after this weekend.
Dusty280 is offline  
post #865 of Old 08-18-2013, 03:38 PM
Chucknav
Registered User
2007 WK 
 
Join Date: Jun 2010
Location: WV
Posts: 40
Quote:
Originally Posted by Chucknav View Post
Unfortunately, I am working in wisconsin for 2 weeks and my wife is driving my jeep while I'm gone, so it will be a while before I can do my own MPG validation. She does not know how to drive to optimize mileage.
UPDATE: Still on 1st tank. My wife has put just over 350 miles on the tank since the EcoTune and the computer is showing 150 miles to empty,. The EVIC "miles to empty" is usually fairly accurate once it gets off the full mark, so I think she is going to get a 500 mile tank. That will equate to about 23-24 MPG, which is awesome for her. She usually gets 20 MPG when she drives my Jeep.

Can't wait to get home and see if I can do better!

2007 WK Limited CRD QDII
2" RR Lift
255/75-17 Duratracs
GDE Eco-Tune

Last edited by Chucknav; 08-18-2013 at 04:08 PM.
Chucknav is offline  
post #866 of Old 08-19-2013, 07:30 AM
Zlartibartfast
Registered User
2007 WK 
 
Join Date: Aug 2007
Location: Menchaca
Posts: 580
There's hope - using the Eco tune, my wife gets about 24 where I average 26.5
Zlartibartfast is offline  
post #867 of Old 08-19-2013, 07:51 AM
Dusty280
Registered User
2008 WK 
 
Join Date: Nov 2007
Location: Green Bay, WI
Posts: 78
the first full tank after the eco tune (80% highway 20% in town) net me 24.2.
we were late so most of the highway was around 75. same trip last year (all highway at 62 got me 21.7) so it is up. It will get a better test this upcoming weekend.
Dusty280 is offline  
post #868 of Old 08-21-2013, 03:54 PM
Chucknav
Registered User
2007 WK 
 
Join Date: Jun 2010
Location: WV
Posts: 40
1st tank results

I just got back from Wisconsin and my wife was still on the 1st tank since installing the EcoTune from GDE. The low fuel light just came on this morning...I was hoping she wouldn't have to fill up before I came home, so I could fill the tank to the top of the neck like I did when I filled it up last time. Luckily, she didn't have to. I just filled up and here are the results: 506.9 miles (GPS verified)/21.387 gallons = 23.7 MPG. Her driving is probably 60-75% highway. I am very happy with those results. She drove the previous tank in my Jeep as well and the results were 20.1 under the same conditions. I do think, however, that she drove with a slightly lighter foot than normal once she saw how much better the EVIC was reading after the tune (EVIC reads between 3.5 to 4.5 low BTW). She kind of got excited about getting 500 miles from a tank, once I told her she was on track for that. I will be keeping track of at least the first several tanks with the tune and post results.

Thanks to everyone for taking the time to post results on here. I have been wanting to do the GDE tune for a while, but just didn't believe it would work this well until I read so many positive results with ZERO negative ones. Like everyone else says, "I wish I would have done it sooner." True...true.

2007 WK Limited CRD QDII
2" RR Lift
255/75-17 Duratracs
GDE Eco-Tune
Chucknav is offline  
post #869 of Old 08-21-2013, 07:29 PM
Zlartibartfast
Registered User
2007 WK 
 
Join Date: Aug 2007
Location: Menchaca
Posts: 580
!!woo hoo!!

My EVIC MPG readout is 6% low every time I do the manual calculations, and I also fill till I can see liquid NOT FOAM in the filler neck. I go to the same pump every time I want to take a sample, so I'm confident I'm getting valid data.

right now I have 24 MPG average according to EVIC that works out to 25.4. Students are back in town, traffic got a lot worse, and my Jeep only get s 25 MPG.

oh, somebody call the Waambulance ;-}
Zlartibartfast is offline  
post #870 of Old 08-22-2013, 06:29 AM
TurboDiesel
Registered User
2008 WK 
 
Join Date: Apr 2011
Location: langley
Posts: 2,222
Quote:
Originally Posted by Zlartibartfast View Post
and I also fill till I can see liquid NOT FOAM in the filler neck.
huh?

2008 CRD // GDE Eco // DPF delete // 3" intercooler // OME HD // 265 dirtytracs etc.
TurboDiesel is offline  
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Green Diesel Engineering tune for WK GDE WK Grand Cherokee & XK Commander Forum 85 12-21-2013 12:06 AM
tune up for a 05' Free-Willy WK Grand Cherokee & XK Commander Forum 0 01-07-2010 05:49 AM
95 ZJ Tune-Up ?'s trontheman89 ZJ Grand Cherokee Forum 2 11-07-2008 10:18 AM
4.7 tune-up, non H.O. H3RESQ ZJ Grand Cherokee Forum 15 01-15-2007 06:21 PM
Tune Up on a 99 GC? MFairbourn ZJ Grand Cherokee Forum 2 07-17-2004 12:45 PM

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 On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome