poor performance problem - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 05-14-2011, 01:53 PM   #1
Join Date: May 2011
Posts: 3
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

pimpmyjeepva is offline   Quote
Old 05-14-2011, 02:19 PM   #2
JIMBOX's Avatar
Join Date: Nov 2009
Posts: 9,914
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



"ya gotta have class"
JIMBOX is offline   Quote
Old 05-14-2011, 02:24 PM   #3
Join Date: May 2011
Posts: 3
has anyone used the superchip programmer
pimpmyjeepva is offline   Quote
Old 05-14-2011, 02:31 PM   #4
joe002's Avatar
Join Date: Nov 2010
Location: Phoenix, AZ
Posts: 1,185
2008 Rubicon, 2 Door, Flame Red, Auto, MyGIG, Power Group, Deep Tint
AEV Pintlers, BFG KM2s 35x12.50x17, Bulldog Fab Rear Stubby Bump, Currie F/R Adj Trac Bars, Daystar Upper Dash, FireStik FireFly Antenna, Kilby Rear Shock Skids, LoD Sig Stubby Front Bump, Midland 75-822 CB, Mopar Filler Door & Locking Gas Cap, Rancho LCA Skid, Rancho Oil Pan Armor, Riddler Diff Covers, TeraFlex 2.5" Spring Lift, Warn PowerPlant HD, Woods Evap Can Relo, Woods SS Relo, Yukon 5.38s
joe002 is offline   Quote
Old 05-14-2011, 03:03 PM   #5
jk wrangler fan's Avatar
Join Date: Feb 2011
Location: Chicago
Posts: 160
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
jk wrangler fan is offline   Quote
Old 05-14-2011, 03:26 PM   #6
MTH's Avatar
Join Date: Oct 2010
Location: North Carolina
Posts: 8,553
Regear or add a supercharger.

A regear runs about $1500. RIPP Modifications makes a good supercharger for $5000.
2010 JKU "Mountain" Edition
TeraFlex 2.5" Coil Lift : Old Man Emu Nitrocharger Shocks : 33x12.5R15 Goodyear DuraTracs : 15x8 Black Rock 909s : Other Stuff . . .
MTH is offline   Quote
Old 05-14-2011, 03:43 PM   #7
nvkid's Avatar
Join Date: Jan 2011
Location: n.nevada
Posts: 774
What made a big big differance for me was when i released the emer. brake.
nvkid is offline   Quote
Old 05-15-2011, 11:20 AM   #8
wlee3372's Avatar
Join Date: Nov 2010
Location: By Ft. Worth
Posts: 107
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!!
Bat Jeep
wlee3372 is offline   Quote
Old 05-15-2011, 11:42 AM   #9
JeeperJake's Avatar
Join Date: Jul 2010
Posts: 3,310
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?
get in--buckle up--hang on
"soothing agricultural implement/personal servant/Walter Mitty multidimensional access utility device conveniently travels on pavement when necessary and often keeps me warm/cool/dry/soothed as needed."
JeeperJake is online now   Quote
Old 05-15-2011, 01:31 PM   #10
The Bad Guy

WF Supporting Member
daggo66's Avatar
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,862
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.


"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is online now   Quote

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help! I am pulling my hair out with my jeep's engine cut-off problem HRDRCKN YJ Tech Forum 7 09-08-2011 01:47 PM
Grand Cherokee, starting problem after getting fuel injector serviced SusanH YJ General Discussion Forum 5 02-26-2011 02:04 PM
Intermittent Starting Problem airexec2 TJ Tech Forum 0 12-06-2010 01:49 PM
Intermittent engine bucking problem 98TJsport TJ Tech Forum 0 11-08-2010 04:42 PM
2400 miles on new jk having trans problem NTJeep JK Tech Forum 4 01-14-2009 02:03 AM

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 02:28 PM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC