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Old 05-14-2011, 12:53 PM   #1
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Talking poor performance problem

my 2008 4 door rubicon seems to have such little power have added a borla exhaust, kn cold air airaid throttle body take off is so sluggish what can i do to give it a real boost
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Old 05-14-2011, 01:19 PM   #2
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get rid of the airaid throttle body-mod and-

Originally Posted by pimpmyjeepva View Post
my 2008 4 door rubicon seems to have such little power have added a borla exhaust, kn cold air airaid throttle body take off is so sluggish what can i do to give it a real boost
Either/or/and get a superchip-or regear



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Old 05-14-2011, 01:24 PM   #3
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has anyone used the superchip programmer
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Old 05-14-2011, 01:31 PM   #4
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Old 05-14-2011, 02:03 PM   #5
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re gear would be the most cost effective approach.

waiting for the pentastar would be a more expensive option but you'll have a brand new vehicle.
2010 Silver Islander 2 door hardtop 6m
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Old 05-14-2011, 02:26 PM   #6
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Regear or add a supercharger.

A regear runs about $1500. RIPP Modifications makes a good supercharger for $5000.
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Old 05-14-2011, 02:43 PM   #7
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What made a big big differance for me was when i released the emer. brake.
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Old 05-15-2011, 10:20 AM   #8
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I have a 2008 Rubicon and am going down the same path. Jimbox posted my other thread above. As you know, there is no power and the superchip does help SOME. You can at least up your RPM's to get in the power range some. I can get up to 70 easy, but I can't maintain 70 in OD. You can't change the OD setting with superchips. I will probably get a re-gear within the next two weeks.

There has been another recent thread with RPM's at 70. I turn under 2k at 70 but decelerate to about 63 the shift out back up to 70. Even at lower speeds, I'm in and out of OD.

Re-gear or buy a manual I say!!
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Old 05-15-2011, 10:42 AM   #9
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Having been a willing and enthusiastic operator of 1958, 1961, 1965 and 1968 VW bugs, as well as numerous other small compact cars of the 60s-70s, I was well trained in the 'lack of power' department.

What my 26hp beetle taught me, was no matter how slow I went, I would always pass somebody.

What various high power sports cars and road cruisers of the 70s-80s90s taught, was no matter how fast I went, someone would always pass me.

IMHO there has to be some common link between the Wranglers which are presented here, with such low power complaints.

I've read of various computer subprograms alleged to be for 'break in periods'....wonder if that is affecting some in the longer run?

Just yesterday I drove from PDX south on I-5 at 65-70 while in OD.....and mashing on the gas pedal to pass, would cause a down shift....which seems normal to me. There was what I might consider 'inadequate power' in OD but the downshift resulted in quite adequate response.

Have a Volvo 850 non turbo version, that has a "sport" and "econo" switch for the transmission. Driving "econo" style, produces a lag and very slow response at certain speeds. The "sport" setting changes shift points dramatically and makes it seem as if extra 30 HP were suddenly added.

With as many complaints as this Forum lists regarding the power issue, I wonder if these rigs as just out of compliance with their normal performance design.

Has anyone taken these in to a tuner shop or Dyno lab to get some metrics on engine output?
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Old 05-15-2011, 12:31 PM   #10
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I had a '71beetle in college. Never had an issue with those 4 angry squirrels. The whole thing is a matter of perspective. That's why I get upset when people discuss in terms of absolutes. It's all opinion so there is no right or wrong.


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