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Discussion Starter #1
Any stats to compare the new diesel against say the hemi 7.7?
Love the acceleration on the hemi, but the mpg is pretty sad. The diesel offers the potential for huge mpg gains. Would like to hear how they differ on acceleration and drive. Any comments ?
Any stats to compare ?
A slow starting diesel could be an issue for me.

Thanks
 

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I have the Jeep Liberty 2006 with the 2.8 4 cylinder diesel and it starts well down to 5 or 10 below 0 degrees. I am sure the Hemi will be able to out run the diesel in 1/4 mile times, but when pulling away from a stop light seems quicker with less pedal because of the torque mine has. I would believe that a newer generation engine will be even better.
 

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I think the Hemi is going to be much quicker and feel more powerful. However for towing or MPG the diesel is the way to go. Not to mention the thing will probably last 250,000 miles!
 

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Sounds like we all need to wait to get some real answers to this.....

I think the Hemi is going to be much quicker and feel more powerful. However for towing or MPG the diesel is the way to go. Not to mention the thing will probably last 250,000 miles!

Sounds like we all need to wait to get some real answers to this..... Watched a show on upgrading diesel performance for more HP by more fluid exhaust system and reworking the turbos. Yes it was a ford truck, eco diesel, but the HP increase lesson might be a transfer to this jeep.
 

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You'll have a little turbo lag on the new diesel but it quickly makes up for it; but there hasn't been any concerns about poor starting at all with any of the modern diesels out there (VW Touareg for example)
 

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Ours in good, we don't beat on it, just drive like normal. We really try for high mileage and got up to 31.7. It pulls good, like you would expect from a V8. Never drove a hemi before, so can't compare.
 

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Pound for pound, any diesel will beat any gasser in raw twisting power. Add a turbo, and the advantages grow exponentially. That plus a huge advantage in fuel efficiency makes diesel the way to go. And less pollution in a modern oil burner. The rest of the world has already figured this out. (Then consider the ridiculous tuning potential of a turbodiesel vice a regular Hemi, the choice is obvious.)
 

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I think the Hemi is going to be much quicker and feel more powerful. However for towing or MPG the diesel is the way to go. Not to mention the thing will probably last 250,000 miles!
I couldn't agree more about the 250,000 mile life of the engine. What worries me is the life of all the emissions stuff. My 2014 GC Overland Eco has already had a cat replacement at 20k miles. Supposedly the new cat is a better design, but I still feel like this will creep up on me again in the future in one way or another and will offset any benefits of owning a diesel. Uncertainty sucks.
 

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I have my EcoDiesel all tuned up with bolt on's and I can honestly say this motor now will hang with the 5.7 any day. Off the crank I'm now putting down 320hp and 640lb ft of torque, and to all four wheels according to the dyno it is 262hp and 566lb ft of torque at 2500rpm's. Off the line 5.7 doesn't stand any chance, this little motor is the way to go!

Here is a link to my thread if anyone is interested on what's done to my motor
Ecodiesel DPF delete and tune
 

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I drove all 3 engines in the 2015 JGC just recently before deciding which Power plant to choose. I was coming off of a 550hp Cadillac CTSV so I was worried about having too little acceleration. First, the 3.6 gasser was a bit weak and you could hear it working real hard when you step on it. Barely adequate in my opinion.

Next, I drove the hemi. I thought, yeah this is more like it. Sounds great, lots of throttle response. But, the gas mileage is horrible. One of the reasons I was tired of my other ride is the 2-3 trips weekly to the gas station.

Last, I drove the ecodiesel. At first, I was a bit unimpressed. There is definite lag from a dead start until the turbo spools up. Then, I discovered sport mode. When placed in this mode, the shifts are earlier and more aggressive with the 8 speed transmission. The throttle response is greatly improved. The ecodiesel won't beat the hemi 0-60, but it is equally fun to drive, especially in sport mode. And getting 600+ miles per tank doesn't suck. I tend to drive it in eco mode 80%of the time and sport mode the other 20% if I'm in a hurry or just enjoying a good stretch of road. I drove the Range Rover Sport diesel and I think the FCA 3.0 engine is more powerful from a "seat of the pants " perspective. Hope this helps

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bottom line. I have had both. the hemi out the showroom floor is quicker, but if you think the mpg numbers are bad from the window sticker, wait till you drive it. before I got it tuned, and modded, I got about 1 more mile per gallon (so, I was at about 13mpg). yeah, it was pretty quick... wish I had a pic of my diablosport t1000, I was under 7 (6.8 was a best, but it did it over and over again) seconds 0-60 all the time. I bought a 2015 grand with the ecodiesel and the first thing I did was buy the GDE hot tune, a drop in dry air filter, and doms fuel cap and protection plate (these are a must). now, after these mods, this is a different animal altogether. this thing will hang with the hemi, and after 70 mph, the thing pulls harder than a hemi ever dreamed of! I would recommend the ecodiesel. I get over 30mpg on the highway all day, my combined is 23mpg; the only reason its not better is because half the time I'm in sport mode. with the upgrades I listed, you would be very happy. promise
JUST DO IT!
 

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well I have not driven a V8 but I can tell you the eco jeep will get up and Scoot .As for Towing .In Calif . limit is 55 with a Trailer and I have had no problem Holding 15 over that going up the Hill's .going up the 14 with a Healthy load I still got 15 mpg with my foot in it all the way up .
 
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