4.7 more power and better gas mileage
#2
#3
There really isn't anything, the 4.7 has almost no aftermarket support. But some basics that don't hurt your fuel economy and boost your power. Exhaust, fastman tb and good spark plugs (nothing exotic, but good copper ones). Now you can also do a cold air intake but I suggest you kind of ignore it, I mean it can help but not really. Build your own if you really want one.
Other things that can benefit you is a 5-speed tranny and 3.92 gears. The 5 speed auto will do 70 mph at ~2000 rpm with those gears, the 5 speed manual I think is closer to 2,100 at 70. The manual transmission is hands down the best, if you have the choice get it.
As for the o2 sensors and map, he is right, they do cause problems. Check them on occasion and from what I've heard sometimes it is wiser to replace it when you think it is failing versus you get a code say they have.
Other things that can benefit you is a 5-speed tranny and 3.92 gears. The 5 speed auto will do 70 mph at ~2000 rpm with those gears, the 5 speed manual I think is closer to 2,100 at 70. The manual transmission is hands down the best, if you have the choice get it.
As for the o2 sensors and map, he is right, they do cause problems. Check them on occasion and from what I've heard sometimes it is wiser to replace it when you think it is failing versus you get a code say they have.
Last edited by Blacknights; 08-03-2013 at 08:55 AM.
#4
Yeah, there really isn't a lot you can do, but let us know what you're getting for gas mileage now. That way we can tell if you're getting what you should be or not. The truck won't be great on gas but the 4.7 has some decent power from the factory compared to other trucks in its class, its not a dog by any means.
I used to pretty regularly get about 17.5 mpg with mine, which is a 5 speed w/ 3:55's.
I used to pretty regularly get about 17.5 mpg with mine, which is a 5 speed w/ 3:55's.
#5
#6
I'm about 12mpg city and about 22mpg highway.
For a truck.. eh.
I got my Fusion and it worked out because of the cost. I either pay $400 a month in fuel for the Durango. Or I pay $250 a month for my car and another $150 in fuel. Either way I'm still paying $400 but at least I'm getting something for my money.
Maybe this applies to your situation (I also kept my Durango because..well, it's a "truck")
For a truck.. eh.
I got my Fusion and it worked out because of the cost. I either pay $400 a month in fuel for the Durango. Or I pay $250 a month for my car and another $150 in fuel. Either way I'm still paying $400 but at least I'm getting something for my money.
Maybe this applies to your situation (I also kept my Durango because..well, it's a "truck")
#7
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#8
Yeah. That's a 3.55 rear with 32.5" tires @70 mph.
Before the Jeep TCM swap I got about 19 @ 70 mph
This is with the AC system off as I only drive the durango for road trips which I usually take a month off in December for. Two years ago was to Colorado, 1,400 miles. Last year to Cali, 2,100 miles.
The trip computer is never more than .5 mpg off from fuel pump numbers.
Before the Jeep TCM swap I got about 19 @ 70 mph
This is with the AC system off as I only drive the durango for road trips which I usually take a month off in December for. Two years ago was to Colorado, 1,400 miles. Last year to Cali, 2,100 miles.
The trip computer is never more than .5 mpg off from fuel pump numbers.