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LOSTCRD

Joined: 18/07/2009 22:51:54
Messages: 26
Location: San Antonio, Texas
Offline
City MPGs have gone from just under/right at 20mpg...to 23mpg+

Highwat MPGs tested today...31.42mpg

If I were just getting better MPGs, I would be happy...but then add in the better performance...and I am very happy.

Gonna keep my final thoughts open until I get a few more miles on the GDE Hot Tune

2006 Jeep Liberty CRD...OME Lift...ASFIR Aluminum Skids and Steps...

DarbyWalters @ L.O.S.T.
[WWW]
LOSTCRD

Joined: 18/07/2009 22:51:54
Messages: 26
Location: San Antonio, Texas
Offline
From my post over at LOST:

I have only had the tune for about 10 days or so but here goes.

Mileage: If you drive conservatively, you will get some great numbers...about 24-25 city/mixes and around 30-32 highway 1800-2000rpm

Mileage: If you take advantage of the "HOT", your mileage will return to about stock but with more power...so it is to be expected. In all fairness, it is still maybe better than stock by about 5%

Driveability: It is much more responsive...better feel from the "Go Pedal". It is not a quantum leap in acceleration but it definitely is faster and smoother. It pulls stong over a greater range of rpm and turbo lag is almost non-exisitent. When using "cruise control", not only is the highway mileage better but it shows less "want" to downshift.

Other Things:
1) The temp guage seems to be reading "slightly" cooler than previous and I already had the SEGR.
2) Tip Out of the "Go Pedal" at lower speeds while the tranny is still in the lower gear range takes a bit of getting used to...it seems to keep power on for a split second...especially noticeable in parking lot manuvers.
3) Probably related to #2...it seems that the CRD Coasts a bit easier...no clunking of the drivetrain when you lift like before.
4) Engine noise at idle is more pronounced than stock...but about the same as a SEGR.
5) The turbo whine seems to be more than stock but less than SEGR alone...not sure but seems that way.

Overall: Much better CRD than stock...Better MPGs than stock if you can resist the urge to "floor it"...Even better driveablity than just the SEGR or Unplugged MAF Sensor.

It seems like GDE has tried to duplicate the characteristics of the newer Piezo Injectors with the tuning of the Pilot Injectors with the Fuel Injectors. Better fuel management has definitely improved the CRD.

If you can not keep your foot "out of it", go for the straight "ECO" and forget the "HOT"...

2006 Jeep Liberty CRD...OME Lift...ASFIR Aluminum Skids and Steps...

DarbyWalters @ L.O.S.T.
[WWW]
LOSTCRD

Joined: 18/07/2009 22:51:54
Messages: 26
Location: San Antonio, Texas
Offline
Update: ECO HOT

Mileage in city/stop n' go varies by quite a bit depending on driving style. If you drive in without regard to ultimate mpg, you will get about 5-10% better than stock. I think if you want the ultimate mpg, you need to stick with the straight ECO Tune.

Even with just 5-10% increase in mpg, the driveability alone makes this tune worth the $$$.

As for highway mpg...I would venture an educated guess (based on personl experience and the charts on hp/torque provided by GDE in a post) that highway MPG would be very close with either ECO or ECO HOT. Definitely 30+ with constant speeds at the rpm ranges from 1700-2000.

I can easily get tranny shudder with the ECO HOT Tune on a stock TC.

2006 Jeep Liberty CRD...OME Lift...ASFIR Aluminum Skids and Steps...

DarbyWalters @ L.O.S.T.
[WWW]
LOSTCRD

Joined: 18/07/2009 22:51:54
Messages: 26
Location: San Antonio, Texas
Offline
Took in fairly easy on this last fillup AND tried to take the highway instead of city streets to and from work....26.55mpg...so it can be done.

***I also added one tube of Dr. Tranny to fight the dreaded shudder***

2006 Jeep Liberty CRD...OME Lift...ASFIR Aluminum Skids and Steps...

DarbyWalters @ L.O.S.T.
[WWW]
LOSTCRD

Joined: 18/07/2009 22:51:54
Messages: 26
Location: San Antonio, Texas
Offline
149 miles from San Antonio to Austin and back to San Antonio. 120 pure highway...33.22 mpg overall.




2006 Jeep Liberty CRD...OME Lift...ASFIR Aluminum Skids and Steps...

DarbyWalters @ L.O.S.T.
[WWW]
LOSTCRD

Joined: 18/07/2009 22:51:54
Messages: 26
Location: San Antonio, Texas
Offline
Found out that my CAC Hose (Intercooler to EGR/Engine Block) was split about 5 " along the bottom near the EGR. I am sure that it was leaking for a bit before it finally blew. Replaced and I expect MPG to get better in city driving.

2006 Jeep Liberty CRD...OME Lift...ASFIR Aluminum Skids and Steps...

DarbyWalters @ L.O.S.T.
[WWW]
LOSTCRD

Joined: 18/07/2009 22:51:54
Messages: 26
Location: San Antonio, Texas
Offline
Just got a 100% highway mpg at 1785rpm ~60mpg of 37.5mpg. This was a 100 mile run. I also am getting a more consistent 23+mpg 100% city (stop n' go). This is with winter fuel and temps from 32 degrees to 55 degrees (that is South Texas winter temps...lol).

2006 Jeep Liberty CRD...OME Lift...ASFIR Aluminum Skids and Steps...

DarbyWalters @ L.O.S.T.
[WWW]
 
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