3.8L performance tuning help!! - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Street Jeep Forum > 3.8L performance tuning help!!

FS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitFlowmaster's Force II Axle-back exhaust system for the 201FS: Wranger BRIGHT License Plate LED! Just $3! Great value

Reply
Unread 01-03-2009, 06:54 PM   #1
cuminsmokethis
Registered User
 
Join Date: Jan 2009
Location: Rupert ID
Posts: 3
3.8L performance tuning help!!

What would the best performaance chips and programmers be for a 2009 wrangler unlimtited 3.8L......... and how big of a horepower gain TIAthanks

cuminsmokethis is offline   Reply With Quote
Unread 01-03-2009, 08:47 PM   #2
jeep95xj
Web Wheeler
1995 XJ Cherokee 
 
Join Date: Dec 2008
Location: Long Island NY
Posts: 1,811
It's a mini van engine leave it alone
jeep95xj is offline   Reply With Quote
Unread 01-03-2009, 09:04 PM   #3
cuminsmokethis
Registered User
 
Join Date: Jan 2009
Location: Rupert ID
Posts: 3
So there is nothing you can do
cuminsmokethis is offline   Reply With Quote
Unread 01-04-2009, 09:14 AM   #4
qf4phlyer
Member
 
qf4phlyer's Avatar
2008 JK Wrangler 
 
Join Date: Dec 2006
Location: Paris Tennessee
Posts: 382
Hypertech programmer will be your best bet. Fill out your profile info, would be easier to help you, if we know what tranny, tires, gears ect.
__________________
08 Wrangler X DETN8R Yellow Rough Country 2.5" progressive rate coil lift, 2.2 shocks. 1.25" body lift, disco's, steering stabilizer. Benchmark EVAP skid. TeraFlex front bumper with shackles. 35x12.5x15 BFG A/T KO's on MB72 wheels.Cobra 75 on a Firestik. Arizona Rocky Road antenna mount. Ward bug shield, DayStar hood wranglers, upper dash panel. Qtech arm rest.

2002 Wrangler Sahara RIP
1979 CJ 7 258 RIP
1975 Cherokee S 401 RIP
qf4phlyer is offline   Reply With Quote
Unread 01-04-2009, 03:09 PM   #5
cuminsmokethis
Registered User
 
Join Date: Jan 2009
Location: Rupert ID
Posts: 3
So would an auto tranny be ok with that programmer or would the tranny slip
cuminsmokethis is offline   Reply With Quote
Unread 01-18-2009, 06:13 PM   #6
leftlanetruckin
XJ on 37's
 
leftlanetruckin's Avatar
1998 XJ Cherokee 
 
Join Date: Jul 2006
Location: missouri via blackpool,lancs.
Posts: 10,452
Quote:
Originally Posted by cuminsmokethis View Post
So would an auto tranny be ok with that programmer or would the tranny slip

too funny.
__________________
1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.The Cherylkee....
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover 4.6 HSE
2000 4.7 4WD WJ with a rebuilt motor.
4.3/700r4/new frame buildup (YJ)....
http://www.jeepforum.com/forum/f12/swap-offically-underway-324622/

Years to gain the hands on experience, and offer it freely.
Minutes to gain the knowledge from the internet, and quote it just as freely.
Choose wisely!
leftlanetruckin is offline   Reply With Quote
Unread 01-19-2009, 12:46 PM   #7
xJoshxx
Web Wheeler
 
xJoshxx's Avatar
2012 WK 
 
Join Date: Sep 2008
Location: Burlington, Kentucky
Posts: 5,501
Quote:
Originally Posted by jeep95xj View Post
It's a mini van engine leave it alone
i knew it was coming. inline 6's are so much better than v6's haha
xJoshxx is offline   Reply With Quote
Unread 01-27-2009, 07:31 PM   #8
tricked919
Registered User
2007 JK Wrangler 
 
Join Date: Sep 2007
Location: WNC
Posts: 1,443
do a search in the JK forum... you'll find nada. Its all a waste - seriously. You're better off flushing your money.

Trying to tune a JK is like polishing a turd.
tricked919 is offline   Reply With Quote
Unread 01-30-2009, 09:55 PM   #9
leftlanetruckin
XJ on 37's
 
leftlanetruckin's Avatar
1998 XJ Cherokee 
 
Join Date: Jul 2006
Location: missouri via blackpool,lancs.
Posts: 10,452
Quote:
Originally Posted by tricked919 View Post
Trying to tune a JK is like polishing a turd.
classic......
__________________
1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.The Cherylkee....
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover 4.6 HSE
2000 4.7 4WD WJ with a rebuilt motor.
4.3/700r4/new frame buildup (YJ)....
http://www.jeepforum.com/forum/showthread.php?t=324622

Years to gain the hands on experience, and offer it freely.
Minutes to gain the knowledge from the internet, and quote it just as freely.
Choose wisely!
leftlanetruckin is offline   Reply With Quote
Unread 01-30-2009, 10:16 PM   #10
alexrule123
Registered User
2001 XJ Cherokee 
 
Join Date: Dec 2005
Location: Jacksonville, Florida
Posts: 7,319
They offer superchargers for the 3.8 and one company claims like over 100 more hp from it but it costs like $5k =( That would really be the only way to make decent power with the 3.8.
__________________
Quote:
The great thing about UDP jokes is no one cares if you get them or not.
2001 Cherokee Limited: My Build Thread
2005 Pontiac GTO 6.0L (DD)
May 2013 COTM
alexrule123 is offline   Reply With Quote
Unread 05-17-2009, 05:05 AM   #11
Prot
Web Wheeler
 
Prot's Avatar
2014 JK Wrangler 
 
Join Date: Feb 2007
Location: Lafayette, LA
Posts: 7,345
Hesco, Avenger, and Ripp Mods all offer supercharger kits with varying results. The best bang for the buck in giving the JK more get up and go is to regear the differentials. The 3.8L has to rev to make power. It has the opposite power band of the 4.0L. The 4.0L makes power from idle to 2,500 rpm. The JK's power band starts at around 2,300 RPM and continues until it redlines. The redline on a 3.8L is higher than a 4.0L and the engine does not feel like it is going to shake itself to pieces when turning several thousand rpm's like the 4.0L does. That's why regearing works so well on a JK. 5.13's on 35's with an automatic gives an ideal ratio. With 35's and a manual transmission, 4.88's are more generally accepted as a better combination. The reason is because the manual transmission has a different overall ratio than the automatic. Ripp Mods unit is a clean install but leaves the air filter out in the open, subject to getting saturated with mud and water, but I think their system will accomodate a snorkel. Avenger's supercharger works more on the lower rpm's than ripp mods does, but requires cutting the hood and installing a goofy looking scoop. Most people don't want to do that, especially since the scoop that is available so far looks stupid. Then there is the Hesco, which is what I am leaning towards. It seems to have some of the best attributes of the previous mentioned two with none of the downsides of either. I'm still investigating it and have not made a decision on it.

And before someone chimes in and says 5.13 gears don't leave enough material and make the gears weak, research before you speak. JK axles and gears are stronger than previous models. People are running various displacements of hemis in JK's with stock D44 axles that have been regeared to 5.13 without a problem. As a matter of fact, people that running 37's on JK's usually run 5.38 gears. It just shows you how gearing is the key to JK performance.
__________________
2014 Copperhead Pearl Unlimited Sahara in progress
Prot is offline   Reply With Quote
Unread 01-09-2010, 08:12 PM   #12
garmrshprd
Registered User
 
Join Date: Jan 2010
Location: usa
Posts: 1
2007 jeep engine mods

there is plenty you can do w/ a cold air intake like K&N or Banks, plus free flow exhaust w/mufflers and pipes. and if you are really motivated replace exhaust manifolds w/ headers. yes all this readily available for 3.8l v6. you'd be amazed at the power once you get all that air in and out efficiently.
garmrshprd is offline   Reply With Quote
Unread 01-15-2010, 02:27 AM   #13
archy333
Registered User
 
Join Date: Jan 2010
Location: seattle
Posts: 2
Hmmm not sure bro !
archy333 is offline   Reply With Quote
Unread 02-09-2010, 08:44 PM   #14
GEM1N1
Registered User
2008 JK Wrangler 
 
Join Date: Oct 2008
Location: KANSAS CITY
Posts: 925
Heard of a lot of people going with the superchips programmer but it's pretty expensive and I'm not sure how much power you would actually get out of it. I considered doing a cat back but I really don't want an exhaust on a jeep that sounds silly going down the road. Does anyone know of a cat back that is quiet???
__________________
2008 2dr Black Rubicon Automatic.
2.5" Rough Country BB
295/70/17 Nitto Trail Grapplers
Missouri Concealed Carry Permit
Kansas Concealed Carry Permit
www.KcConcealedCarry.com
GEM1N1 is offline   Reply With Quote
Unread 10-05-2012, 08:10 PM   #15
Chem-E
Registered User
 
Join Date: Oct 2012
Location: Laramie, w
Posts: 1
JK Power

I actually had great results with the Superchip Vivid Link system. 0-30 went from 7 seconds to 4.2, 0-60 went from 22 seconds to 13. Plus I went from 15.2 MPG in town to 17.6 MPG in town. I currently have 35's with 3.73s but I plan on 4.88s.
Chem-E is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.