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Old 02-10-2010, 07:58 PM   #1
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Under powered

Just recently purchased a 2010 jk with the mercanery package. 4" lift and 35's. Before I purchased the jeep I did some research and heard they are under-powered. That is an under statement. What can I do to increase the power. I do very little off-roading. It is my daily drive.

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Old 02-10-2010, 08:04 PM   #2
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There is not really much you can do about the power. Not without spending LOTS of money. But re-gearing is an option, and if it is an auto trans you can reprogram the shift points to help.

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Old 02-10-2010, 08:12 PM   #3
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Thanks. What about a performance chip? Do they work,and if so, how much hp is gained?
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Old 02-10-2010, 08:18 PM   #4
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Quote:
Originally Posted by Mercanery View Post
Just recently purchased a 2010 jk with the mercanery package. 4" lift and 35's. Before I purchased the jeep I did some research and heard they are under-powered. That is an under statement. What can I do to increase the power. I do very little off-roading. It is my daily drive.
Where do you live? There is a local dealer selling those Mercanery packages. They put the lift and tires on but don't address the gearing issue. I thought it was just a local package.... Anyways, as to power, the only thing you can do is regear. I ordered a Superchips programmer today but you can't expect it to give you much power, just throttle response and shift points. Those are some big tires for that v-6, good luck.
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Old 02-10-2010, 08:31 PM   #5
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Quote:
Originally Posted by Mercanery View Post
Just recently purchased a 2010 jk with the mercanery package. 4" lift and 35's. Before I purchased the jeep I did some research and heard they are under-powered. That is an under statement. What can I do to increase the power. I do very little off-roading. It is my daily drive.
It's posts like this one that makes me happy I got the standard. I determine my own shift points and if I need more torque, I go to a lower gear. Now, getting off the stop line is another matter. Only cure for that is lower gearing. Here's to the standards out there.
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Old 02-10-2010, 08:41 PM   #6
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I live in Overland Park, and did buy a Mercanery from Landmark. what is the cost of have the gears changed out?
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Old 02-10-2010, 08:46 PM   #7
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I live in Overland Park, and did buy a Mercanery from Landmark. what is the cost of have the gears changed out?
Where is hilldweller when you need him....he'll be able to answer this one or USantigoon. I think the going price is around 1200 to 1500. Also, if you look up USantigoon's posts, you will find a neat table showing tire size vs gear ratio, a truly useful table.
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Old 02-10-2010, 09:00 PM   #8
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I live in Overland Park, and did buy a Mercanery from Landmark. what is the cost of have the gears changed out?
Count on about a grand. I would try contacting someone like Hot Rod Express in Blue Springs. Don't try going back to landmark because you will pay through the nose if they will even do it.
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Old 02-10-2010, 09:05 PM   #9
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Hod Rod Express News and Home page, Blue Springs, Missouri
816-224-9597 Can't remember who I dealt with but they seem like straight up guys. Good Luck.

Are you driving a Auto or stick? 4dr or 2dr?
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Old 02-11-2010, 06:18 PM   #10
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Auto four door. Will post pictures when it warms up so I can wash it. Looks like that may happen in May
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Old 02-11-2010, 09:06 PM   #11
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From what I've read, adding a chip, or using a tuner, and adding a more flowing exhaust and a less restrictive intake all together will get you from 10 to 20 hp,, and mostly above 4000 RPMs where you don't really use it much.

I think the best I've heard of is from a magazine test with a Jet stage II chip, AEM intake and an exhaust they got a 32hp increase..

So about $350 for an exhaust, $275 for an intake, and $300 for Jet Stage II..

over $900 for about 15% increase.
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Old 02-11-2010, 09:10 PM   #12
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From what I've read, adding a chip, or using a tuner, and adding a more flowing exhaust and a less restrictive intake all together will get you from 10 to 20 hp,, and mostly above 4000 RPMs where you don't really use it much.

I think the best I've heard of is from a magazine test with a Jet stage II chip, AEM intake and an exhaust they got a 32hp increase..

So about $350 for an exhaust, $275 for an intake, and $300 for Jet Stage II..

over $900 for about 15% increase.
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Old 02-11-2010, 11:32 PM   #13
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I had 513 gears installed & I have an auto, 2007 4 door with 35 inch tyres. Very little noticable gain in power, it is almost the same as the 410's that were in it when I got it. I have been tossing up about the programmer, but have heard they don't do a great deal untill above 4000 rev's so I am holding off on that untill I can find out more about it. Personally I think the gears were a waste of money.
Gem1n1- I am very interested to hear how your programmer performs
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Old 02-11-2010, 11:44 PM   #14
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I have the same setup at Mercenary except for a 6" lift. When I am on the freeway it is always in OD off. But on surface streets it is just fine. The trans will eventually work the way you drive so if you are heavy foot the computer will learn that and respond better.

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Old 02-11-2010, 11:52 PM   #15
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Mine is good on take off, but like you said the OD is pretty useless on the highway.
You have a nice Jeep Brody ↑
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Old 02-12-2010, 12:03 AM   #16
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Mine is actually pretty good on pickup as well, but high end torque just doesn't happen on the freeway. You have to floor it to get it to down shift and speed up. And lets not even talk about if there is a head wind.

Thanks jcf. Right back at cha! Oh how I miss the Moab red cliffs. Looked at your profile and saw those hills in the background. I am so upset that I can't come to Jamboree this year over easter. I have to work and fly out to Maui. Sad, but I would rather be in Moab.

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Old 02-12-2010, 12:11 AM   #17
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Yeah' I am looking foward to Jeep Safari this year, I am guessing thats what you mean it's at easter. There is an expo' held at the local Arena & they have a really good raffle with winches, tyres,all sorts of great prizes. The town is so busy it is so fun, pity you can't make it but maybe' next year?
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Old 02-12-2010, 12:34 AM   #18
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Yeah Safari is what I meant. Totally going to miss the hot wings at Mcstiff's. I'm sure I will end up there either the week before or the week after. There still seems to be a lot going on in town just not as much.
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Old 02-12-2010, 12:38 AM   #19
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I hope the weather is warmer than last year, it was a bit cold & we had some rain. Well even the week after would be fun & not so busy on the trails I havn't tried the wings at McStiffs but we eat at the new coffee shop that he opened up next door all the time, the fish taco's are magic you should try them also.
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Old 02-12-2010, 06:40 AM   #20
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Quote:
Originally Posted by Mercanery View Post
Just recently purchased a 2010 jk with the mercanery package. 4" lift and 35's. Before I purchased the jeep I did some research and heard they are under-powered. That is an under statement. What can I do to increase the power. I do very little off-roading. It is my daily drive.
Why did you buy it then? Just to get online and complain?
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Old 02-12-2010, 07:08 AM   #21
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I had 513 gears installed & I have an auto, 2007 4 door with 35 inch tyres. Very little noticable gain in power, it is almost the same as the 410's that were in it when I got it.
That's the gear choice I'd recommend for him.

Unless he got the X/Sport and has the small pumpkin up front. They he'll have to buy a different axle to be able to fit the 5.13's in.

What else comes in the Mercenary Package? K-Bar holder, molle clips, trauma kits, and a year's worth of MRE's?
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Old 02-12-2010, 08:21 AM   #22
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Hey, news flash--"Michael Andretti, buys jeep jk, because he was impressed with it"

Well, maybe it was a dream

JIMBO

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