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  #25  
Old 06-19-2012, 05:16 PM
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Re: 5.7 guys opinions needed

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Originally Posted by sullyz View Post
I haven't driven the V6, but coming from a Porsche Cayenne S with the 4.5 V8, I'm pretty disappointed with the 5.7 Hemi in my new JGC. It probably has more to do with mapping and transmission gearing/shift points, but it feels so slow compared to the Cayenne... and the Hemi makes more HP and Torque!
It's the weight and suspension tuning. The Jeep just doesn't have any of the clues to its performance, the exhaust is quiet, the suspension is quiet, and the power delivery is linear - so it simply doesn't feel fast.

My previous vehicle was the same performance level, it's a fairly light SUV with AWD and a V6. It feels SO much faster simply because its lighter and the weight transfer and the engine gets louder.

Granted, none of these are particularly fast vehicles. But even the SRT8 Jeep I drove didn't feel as fast as it was.
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  #26  
Old 06-19-2012, 06:32 PM
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Re: 5.7 guys opinions needed

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Originally Posted by FAUEE View Post
It's the weight and suspension tuning. The Jeep just doesn't have any of the clues to its performance, the exhaust is quiet, the suspension is quiet, and the power delivery is linear - so it simply doesn't feel fast.

My previous vehicle was the same performance level, it's a fairly light SUV with AWD and a V6. It feels SO much faster simply because its lighter and the weight transfer and the engine gets louder.

Granted, none of these are particularly fast vehicles. But even the SRT8 Jeep I drove didn't feel as fast as it was.
I haven't even started on the handling characteristics compared to the Cayenne... no point, as it's not a fair comparison. But it's not the weight that makes the Cayenne feel faster, they're roughly the same in that department. Cayenne simply IS faster.
It has to be the fuel mapping, throttle response and transmission gearing. The Cayenne makes less power and torque, only 335 HP and 310 trq compared to 360 HP and 390 trq of the 5.7 in the Jeep. Cayenne curb weight is 5071 lbs and JGC with 5.7 is stated as 5020 lbs. So the Jeep is on par in the weight department. Not sure what drivetrain losses are in the Jeep, but I'll tell you right now, the Jeep just ain't getting that torque to the wheels IF the numbers are what they claim. Porsche has a tendency to underrate their numbers, and I'm guessing like most domestics, Jeep is either accurate or overrated.
Don't get me wrong, I like my Jeep, especially at half the price of another Cayenne, but I'm very disappointed in the performance based on the numbers they claim.
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Old 06-21-2012, 09:56 AM
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Re: 5.7 guys opinions needed

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Originally Posted by sullyz View Post
I haven't even started on the handling characteristics compared to the Cayenne... no point, as it's not a fair comparison. But it's not the weight that makes the Cayenne feel faster, they're roughly the same in that department. Cayenne simply IS faster.
It has to be the fuel mapping, throttle response and transmission gearing. The Cayenne makes less power and torque, only 335 HP and 310 trq compared to 360 HP and 390 trq of the 5.7 in the Jeep. Cayenne curb weight is 5071 lbs and JGC with 5.7 is stated as 5020 lbs. So the Jeep is on par in the weight department. Not sure what drivetrain losses are in the Jeep, but I'll tell you right now, the Jeep just ain't getting that torque to the wheels IF the numbers are what they claim. Porsche has a tendency to underrate their numbers, and I'm guessing like most domestics, Jeep is either accurate or overrated.
Don't get me wrong, I like my Jeep, especially at half the price of another Cayenne, but I'm very disappointed in the performance based on the numbers they claim.
You can feel the Jeep Hemi holding itself back. Doesn't it limit torque to not break stuff? Here is an idea, make the driveline and tranny stronger, don't limit power.

The computer and programming makes we want to sell the Jeep. It is that bad. I have never been in a vehicle where it has absolutely no idea what gear to be in and how to downshift without breaking your neck.

Everyone warned me about buying a Dodge product but I fell into their trap. I thought they changed, but I was wrong. The rest of the vehicle is nice but can't wait to pay it off and move on.
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  #28  
Old 06-23-2012, 02:42 PM
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Re: 5.7 guys opinions needed

Thanks for all of the tips! They sound great but living in Orlando, FL it will be difficult to use any of them. There are no back roads. Traffic lights are everywhere and I have to use the AC. lol.

I'm still very happy that I went with the hemi! Having the extra power is well worth the decrease in mpg.
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Old 06-23-2012, 04:16 PM
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Re: 5.7 guys opinions needed

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Originally Posted by 77rednecktruck View Post
You can feel the Jeep Hemi holding itself back. Doesn't it limit torque to not break stuff? Here is an idea, make the driveline and tranny stronger, don't limit power.

The computer and programming makes we want to sell the Jeep. It is that bad. I have never been in a vehicle where it has absolutely no idea what gear to be in and how to downshift without breaking your neck.

Everyone warned me about buying a Dodge product but I fell into their trap. I thought they changed, but I was wrong. The rest of the vehicle is nice but can't wait to pay it off and move on.
You must have a lemon. The jeep is more of a truck, but it is on the par street world handling and performance wise with my neigbor's cayenne, until the roads get a little wet, then the wk2 runs circles around the cayenne. The C does seem to like cruising 120+ mph however, but who can do that an retain their license. The neigbor's has wk2 envy and agrees the the cayenne styling is terrible in comparison and the interior is crappy.
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