Daily driver 02 TJ with 4" lift and 31" tires... - JeepForum.com
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post #1 of 7 Old 07-07-2010, 04:03 PM Thread Starter
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2002 TJ Wrangler 
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Location: Wetaskiwin
Posts: 2,499
Daily driver 02 TJ with 4" lift and 31" tires...

I know what you are thinking... so I will start with the fact that I understand what the fuel economy is, and nothing is going to change that.

My issue is a lack of power. I know the TJ isnt a sportscar, but there is an overpass I take daily that scares me. Its at such an angle and there is so much traffic that it is hard for me to merge and get up to the flow of traffic.

What can be done to give my Jeep a little more 'oomph' on the highway?

I was thinking about a superchips or something like that... something that doesnt sound annoying and actually does a bit (the jeep had a airraid filter and throttle body spacer when I bought it... those came off the next day).

Do any of the 'programmers' actually work well for Jeeps, or well enough to warrant the purchase?

Maverickxeo is offline  
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post #2 of 7 Old 08-24-2010, 08:21 PM
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2006 LJ Wrangler 
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Location: Providence
Posts: 257
have you regeared?
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post #3 of 7 Old 11-29-2010, 12:58 PM
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i have a 4 banger 98 TJ with 4.10 gear ratio with 31's.
its kinda slow getting into 3rd gear and drags when im going uphill.
i wanted more power originally, but my conclusion was who cares?
when merging into the traffic, people should have some common respect on the road and move aside.
and if someone hits my jeep.. who cares? ill put some better parts on it.
thats y i have jeep. you can do so much things on the jeep and prices are not too costly
98BlkTJ is offline  
post #4 of 7 Old 01-03-2011, 12:03 AM
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2004 WJ 
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Location: Clarksville
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I think the tires are your limiting factor for your speed. 31" are pretty big for a 4 cylinder. Have you considered going down a size or two, perhaps back to stock even? That will reduce the rotational weight the engine has to move, so it should return a little "ommph" back to you.
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post #5 of 7 Old 01-04-2011, 09:23 AM
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1998 TJ Wrangler 
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Location: Montreal, Canada
Posts: 1,258
sell the 4 banger get a 6cyl

'98 TJ Manual -2.5" rcx long arm on 31
'99 Xj, Stock on 30"
'86 Monte Carlo 357 stroker. 450hp.
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post #6 of 7 Old 01-04-2011, 06:33 PM
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Posts: 111
4 banger

I've had my Jeep since 2000, its a '99 4cylinder with a 2" bb lift and a magna flow exhaust, ever since i've had the Jeep i've had 31x10.5's.
I drive highway and city and I havnt had any problems.
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post #7 of 7 Old 01-10-2011, 11:33 PM
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1999 XJ Cherokee 
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Location: Columbus GA
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4" and 31s... The 4 cyl is not liking pushing your Brick that 4 inches higher with 31s. If you want lift, get a smaller lift? Or go get some tube fenders and run 0 lift? The 4in is hurting you IMO!
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