I was just wondering what MPG increases you have seen and what tune you have? are you happy about your purchase?


Also have any of you had engine failures while running this tune? If so what failed, or what happened?

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06 crd, straight pipe, EHM,
99 f250 7.3l powerstroke sled puller, All kinds of goodies.
79 2.3 turbo mustang hatch
88 5.0 vert (blown, but soon to be TT stroker)
66 f100 project.
01 cbr 929rr

With GDE in 3 vehicles, no problems, just pure satisfaction.

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2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Proudly supporting CRD vendors, and their development of quality parts and accessories.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.

Running GDE Eco tune, noticed a 30% increase overall in fuel efficiency, could easily push that higher with the Transmission tune and economical driving, but I didn't buy a Turbo Diesel to totally baby it, enough is enough.

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Silver 2006 KJ 2.8L CRD Limited:
GDE ECO Tune / Fumoto Valve / E-Tecno GX3123 7v Glow Plugs / 2nd Gen Fuel Head / Mishimoto RED Hoses / Rockers/Lifters @ 114k / Hayden FC + 11 Blade Nylon / Sears P1 Battery / Transgo 45RFE-HD2 Reprogramming Kit / Timken Front Bearings

. I run the GDE turbo tune, I'm sure I would get great fuel economy, but I have never even checked what it is, and I take it off road a lot


Sent from my iPhone using Tapatalk

Gde tunes are the best thing money can buy for crd. Cleaner intake, better torque, power and fuel economy. My best is a little over 30 mpg driving constantly at 70-72.

Regarding failures, knock on wood, I didn't, but who has failures usually didn't do timely oil changes and/or drove the diesel like a race car, without having egr disabled. This is my opinion at least, based on what I have seen and read.

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

If you check my old posts from 2007-8 and reference "dyno testing", you will find back to back comparisons of GDE and IM tunes. However, GDE is the only way to eliminate EGR without ALSO eliminating turbo overspeed protection, which is critically important.

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP

What overspeed protection?

Also doesn't anyone run gauges? I see pretty much NO ONE mention gauges in their sig's that are running tunes.


EDIT: No luck finding your dyno runs

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06 crd, straight pipe, EHM,
99 f250 7.3l powerstroke sled puller, All kinds of goodies.
79 2.3 turbo mustang hatch
88 5.0 vert (blown, but soon to be TT stroker)
66 f100 project.
01 cbr 929rr

Here are the links:

viewtopic.php?f=5&t=31234

viewtopic.php?f=5&t=44912

GDE maintains OEM use of EGR to bleed off excessive boost and keep turbo from being damaged from overspeeding. You have to use SEGR with IM. That eliminates the overspeed protection.

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP

That would be surge protection, not overspeed protection. Two different things.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
RL super sliders, Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

I believe Keith has stated it as I did. Will check with him on that.

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP

Thanks for bringing this to my attention. I read it on this board a couple years ago and thought it came from Keith. However, he just has clarified that SEGR does eliminate an important protection for our turbos, but it is NOT overspeeding, as CAT has noted.

Here is his reply:

"The condition requiring the ‘blow off’ of residual intake pressure is for surge protection (flow reversal on compressor wheel blade tips). Overspeed protection is based on vane position and maximum boost setpoint. There are corrections for boost setpoint based on altitude and air temp. Altitude is the primary driver for reaching peak turbo speeds. The engine is derated at high altitude to prevent overspeeding."

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP

I just recently got GDE's hot tune. I am averaging 28-29mpg on my weekly commute which is a little bit of city(4 miles) and about 10miles of highway. My daily commute was around 24mpg before the tune, with my EGR blocked. On a long highway pull I have seen 32.6mpg a few times and it was still climbing.

Dont take this as absolute numbers though, only as an expected gain in mpg. I know for a fact that my Speedo reads about 5% high and my odometer reads about 10% low, so chance are my MPG's as displayed by the jeep are not perfectly accurate.

GDE has spent a lot of time with these jeeps and are active on this forum. I think you can have confidence in their tunes, even more so than stock since they eliminate the EGR and make for an overall smoother running engine.

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2006 CRD - GTB2056 turbo by Dieselguy86, Eco Trans Tune, Lift Pump, Week's, HDS Tstat, Racor Filter, ARP's, OME 790's+Top Plate, JBA 2.5", JBA UCA, Moab's+265/75R16, ARB Bull Bar, 4.10's, TrueTracs