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  #13  
Old 11-29-2010, 10:42 AM
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Re: V6 vs. V8

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Originally Posted by GlowingGhoul View Post


You need to reprogram your throttle. I have a 02 4.7 GC as well, and the 5.7 is FAR more powerful.

On my 02, if you lightly press on the pedal, it takes off, on my WK2, the first 1/4 of the pedal gives nice low speed control, but after that it's a rocket.

I suspect it's this difference in throttle sensitivity you're feeling, not to mention the fact that accelerating quickly in the WK2 isn't quite the "event" it is with the 2002, which gets really loud.
Thanks for the advice. How does one reprogram the throttle?
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  #14  
Old 11-29-2010, 10:47 AM
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Re: V6 vs. V8

clockwoo, your call, gotta test drive both. You certainly don't need the Hemi for NE driving or bad weather. It does help a ton for: high altitude, extended vertical, loaded vehicles, towing, and out dragging grandma's caddy at a stoplight.

Red G8R, below is nate's throttle reset method, works well.

Electronic Throttle Control (ETC) .. let's discuss
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Old 11-29-2010, 10:48 AM
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Re: V6 vs. V8

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Originally Posted by DieselvRR View Post
11-12 MPG on V6???? Something isnt right.
Do you have any suggestions how to troubleshoot it? I have no clue.
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  #16  
Old 11-29-2010, 10:50 AM
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Re: V6 vs. V8

I own the V6 and love it, it's silky smooth and gets excellent gas mileage (over 500 miles on a tank on the highway).

I drove both and preferred the V6, so just give them both a shot. And I definitely don't think either engine "works extra hard" to move the vehicle.
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  #17  
Old 11-29-2010, 10:54 AM
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Re: V6 vs. V8

I have driven a similar weight and HP SUV vehicle for the past 4 years (GMC Acadia). It has a V6 engine. I have not felt underpowered and have pulled some pretty heavy loads at highway speeds with it (tandem axel trailers).

I think the only criticism of these V6 engines...is that when they need HP...your really gotta mash on the throttle and let the tranny downshift to high RPM's to get the needed power. An engine with some cubes / torque just requires a gentle nudge on the throttle.
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  #18  
Old 11-29-2010, 11:10 AM
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Re: V6 vs. V8

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Originally Posted by JoeSchmoe007 View Post
Do you have any suggestions how to troubleshoot it? I have no clue.
If you're only on your second tank of fuel, you aren't to a place where you can really know what the mileage will be long term. New engines take a while to wear all the way in.

If you've just been driving around town with a green engine, I'd say you have a while to go. It takes a few thousand miles until things settle in and the economy improves to where it will be.

I tend to get about 17-18mpg around town (I usually have it in Sport mode, and that uses a bit more fuel), and somewhere to the tune of 23-24mpg highway. That's right where I expected it to be.
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  #19  
Old 11-29-2010, 11:15 AM
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Re: V6 vs. V8

V8 ftmfw
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  #20  
Old 11-29-2010, 11:27 AM
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Re: V6 vs. V8

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Originally Posted by Technosavant View Post
If you're only on your second tank of fuel, you aren't to a place where you can really know what the mileage will be long term. New engines take a while to wear all the way in.

If you've just been driving around town with a green engine, I'd say you have a while to go. It takes a few thousand miles until things settle in and the economy improves to where it will be.

I tend to get about 17-18mpg around town (I usually have it in Sport mode, and that uses a bit more fuel), and somewhere to the tune of 23-24mpg highway. That's right where I expected it to be.
Yes, I only have 350 miles on the car.
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  #21  
Old 11-29-2010, 11:31 AM
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Re: V6 vs. V8

I wanted a V6 originally, but the Hemi came in the Limited that I bought. If it had the V6, I wouldn't be upset because the V6 felt VERY good to me during extensive road tests. That said, the Hemi has been returning great fuel economy numbers (got 23mpg on one 99% highway trip, 507 miles using 22gal), the kind I was expecting the V6 to provide, so I'm loving the Hemi.

The one and only detraction to the Hemi is that it reduces carrying cargo capacity by ~300+lbs (according to the Jeep specs) due to: weight of the Hemi, weight of the 545RFE trans, weight of heavier duty brakes and the heavier rear axle. However, the payback is greater towing capacity. I don't see this as much of a practical detraction, though it might affect others.

There is much more noticeable grunt from the Hemi in all conditions when the go-pedal is mashed to the floor which I have done just a few times now that I've been broken in (just past 1000 miles this weekend and did an oil change). For all normal driving, hills or not, the Hemi is an outstanding engine and I'm so glad I got "stuck" with it so to speak. I've got power to spare with economy if I do my part, and thoroughly enjoyed showing my tail lights to my friend in his new 4.2L Q7 yesterday.
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  #22  
Old 11-29-2010, 11:35 AM
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Re: V6 vs. V8

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Originally Posted by Bmwister View Post
thoroughly enjoyed showing my tail lights to my friend in his new 4.2L Q7 yesterday.
+1, this is highly under rated.
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  #23  
Old 11-29-2010, 11:37 AM
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Re: V6 vs. V8

I live at 5,000ft and frequently climb to 7 or 8,000, and the difference between the V6 and Hemi was very noticeable to me. Do long test drives with both. I really noticed a difference on uphill highway on-ramps. The v6 had a hard time accelerating the vehicle. The hemi was effortless.
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  #24  
Old 11-29-2010, 12:19 PM
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Re: V6 vs. V8

I have the V8 and have not regretted the choice. I do some towing and was very pleased with the response when hooked up to a flatbed with almost two cords of red oak (5-6000lbs just in wood) Honestly I barely noticed it was there. I also had the opportunity to borrow a V6 Limited when mine was in for a couple hours and there is most definatly a difference in throttle response, particularly when you punch it when your already doing 60. There is a difference. Add in also the additional resale value of the V8. I'm not saying the V6 isn't a good choice too, just for different reasons.

Oh and just food for thought I took my Hemi on a road trip with less than 500 miles on it. When I got back after 1600 miles (1400 highway) I had averaged 21.5 calculated, 21.9indicated on the evic
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