392 Sluggish vs Modded 2.0

[AnnDee4444]

These were taken from dyno charts. I would NOT trust them to be accurate in the lower rev range, especially at idle speeds.

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[Zandcwhite]

These were taken from dyno charts. I would NOT trust them to be accurate in the lower rev range, especially at idle speeds.

Power output is meaningless at idle speeds anyway. Anytime you need power, you push on the throttle and you're well into the meat of the power on any engine. Being that these are all autos (aside from the weakest of the bunch in some JLs), it really doesn't matter if the peak power is at 2500 or 5500, it will downshift enough to get you there nearly instantaneously. The narrow power band of the diesel just means much quicker up shifts as you gain speed.

 

[ag4ever]

Thanks! It's really interesting that the 392 and the 3.0TD are almost perfectly aligned, in both torque and horsepower, from idle to 3,000rpms.

Note that the 3.0TD delivers the most power of any Wrangler engine in the rpm range where we drive the vast majority of the time. It was really the absolute perfect engine for a Wrangler: power, where it's needed, and fuel economy. And...it did both effortlessly.

Unfortunately my short-hop driving patterns took me through a DPF every 24 months - under warranty of course.

In one breath the diesel is the same as the 392.

In the very next breath, the diesel has the best power???

HUH???

For me, I drive between idle and 3,000 when I am relaxed and just chill.

When I am, yahoo, I am 3,000 to redline. Let me see the diesel do that! The diesel falls on its face when the 392 comes alive.

 

[2nd 392]

In one breath the diesel is the same as the 392.

In the very next breath, the diesel has the best power???

HUH???

For me, I drive between idle and 3,000 when I am relaxed and just chill.

When I am, yahoo, I am 3,000 to redline. Let me see the diesel do that! The diesel falls on its face when the 392 comes alive.

Different tools for different jobs. Lifelong muscle car/muscle Jeep guy for fun. Career diesel driver for work. …. Sure, diesels are great for workhorses, heck, the newer ones got ~8 mpg hauling ~80K lbs. …
I want fun when not working … that said, I was waiting to test drive a diesel since it at least had respectable torque when the V8 rumors started. So waited until confirmed or denied , the V6 and 4 banger were unacceptable to me.

 

[rickinAZ]

In one breath the diesel is the same as the 392.

In the very next breath, the diesel has the best power???

HUH???

For me, I drive between idle and 3,000 when I am relaxed and just chill.

When I am, yahoo, I am 3,000 to redline. Let me see the diesel do that! The diesel falls on its face when the 392 comes alive.

Here is what the diesel is good for, and it barely broke idle doing it. The quiet/confident muscle leads to drama-free ease. I'm loving my 392, but if the 392 tried this you could hear it in the next county.

Watch starting at 1:30.

That said, the 392 is (much) more fun above 3,000 rpms, but you have to admit this feat is impressive.

 

[Tpsillos]

I test drove a 392 jeep as well and wasn't impressed. They sound nice as long as you're not around the front where "the injectors" tick worse than any of my diesels... But I did trade my scat pack challenger in on this jeep, so I knew what I was doing.
The tech that did my HPFP recall has a personal 392 wrangler and he agreed mine was more powerful, at least with this 70hp tune.
Then again, I am biased since my diesel tow truck will outrun a hellcat without having to go over 4k rpms.

 

[Whistle Pig]

Different strokes for different folks.

 

[Guv]

Here is what the diesel is good for, and it barely broke idle doing it. The quiet/confident muscle leads to drama-free ease. I'm loving my 392, but if the 392 tried this you could hear it in the next county.

Watch starting at 1:30.

That said, the 392 is (much) more fun above 3,000 rpms, but you have to admit this feat is impressive.

Dude, what kind of stress did your driveline endure I guess at least you had some good ambient temperatures helping keep your transmission beating.
Diesels are some funny buggers, I have a 26 hp Kubota that thinks it’s a Bradley Fighting Vehicle.

 

[RubyRuin]

I've owned all powertrain configurations except the 2.0L and I am in a pretty satisfied place with the current V6 now that it's tuned, but man I'd pick up the EcoDiesel in a heartbeat if Jeep offers it again -- I've accumulated ~40K miles between the two JLURDs I had and didn't have any issues. I definitely would have liked to see what an EcoDiesel with the GDE tune can do.

 

[rickinAZ]

Dude, what kind of stress did your driveline endure I guess at least you had some good ambient temperatures helping keep your transmission beating.
Diesels are some funny buggers, I have a 26 hp Kubota that thinks it’s a Bradley Fighting Vehicle.

Just to be clear, this is not me. I live in hot, dry Phoenix, where we hardly ever have 80,000 lb semis stuck in the snow .

I just stumbled across the video on YouTube.

 

[Guv]

Just to be clear, this is not me. I live in hot, dry Phoenix, where we hardly ever have 80,000 lb semis stuck in the snow .

I just stumbled across the video on YouTube.

Gotcha, I wondered considering your username.

 

[rickinAZ]

Gotcha, I wondered considering your username.

You weren't as far off as you'd think: while Phoenix is consistently warm, the coldest temperature ever recorded in Arizona is MINUS 40 (Hawley Lake on January 7, 1971).

 

[Guv]

 

[Atomic-Mouse]

If you want the 392 to act more responsive around town use the paddle shifters. Hold it in a lower gear and keep the RPMs up. The paddle shifters are a bit slow to react so plan on shifting a second earlier than you think. I didn’t use my paddles for the first year I owned the 392, now it’s never in auto mode.

 

[Zandcwhite]

The comparisons in this thread are laughable at best. The drive by wire, detuned stock 392 feels sluggish compared to my tuned 2.0t, ecodiesel, scatpack or whatever? No shit. A simple pedal commander will fix that. No need to do anything else. Not to mention even stock those tuned vehicles (minus the scat pack) can't remotely keep up if you simply hammer the throttle on each of them. "But it feels sluggish when I baby the throttle"? Or when I give it the same amount of throttle I do in my tuned rig (Which is nowhere near the same amount of throttle thanks to the drive by wire and tune)? 0-60 doesn't lie. Dumps don't lie. Sure the EcoDiesel has a torque advantage with a tune, and a 150hp disadvantage. Add in the small power band the tuned EcoDiesel still has half the power under the curve. The reality is you test drove the 392 and need every minor criticism you can find to talk yourself out of spending the money. No it's not sluggish or slower anywhere even bone stock compared to your tuned Jeep. Fully tuned with the 80ftlb+ tune the ecodiesel won't break 5s 0-60. The 392 beats that by a full second stock...sluggishly apparently. Make it make sense.

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