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Unread 09-28-2013, 07:47 PM   #1
tmaxxman80
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1995 YJ Wrangler 
 
Join Date: Sep 2013
Location: irvona, Pennsylvania
Posts: 8
2.5L power

is there any way to get just a littel more power out of my 2.5L My jeep is running 31s and is a 5 speed don't know what gears are in it but really didn't want to get in to gearing it and one more ??? can i run a diff locker on the road don't know to much about them i know i would love to get them put in i hate my 2 wheel drive 4x4 lol

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Unread 09-28-2013, 07:51 PM   #2
jsawduste
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2006 YJ Wrangler 
 
Join Date: Jul 2006
Posts: 2,947
Move the IAT to the airbox. and modify the crank sensor for more timing.

I`ve shown this mod several times.
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Unread 09-29-2013, 07:22 PM   #3
tmaxxman80
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1995 YJ Wrangler 
 
Join Date: Sep 2013
Location: irvona, Pennsylvania
Posts: 8
Quote:
Originally Posted by jsawduste View Post
Move the IAT to the airbox. and modify the crank sensor for more timing.

I`ve shown this mod several times.
hope i dont sound to dumb what what is IAT and were is it at
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Unread 09-30-2013, 06:22 AM   #4
bogleparsons
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2013 JK Wrangler 
 
Join Date: May 2011
Location: fayetteville, NC
Posts: 1,805
Intake Air Temperature sensor
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If it's not supposed to move and does use duct tape.
If it's supposed to move and doesn't use WD40
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Unread 09-30-2013, 06:29 AM   #5
JeeperDon
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1993 YJ Wrangler 
 
Join Date: Jan 2005
Location: Albuquerque, NM
Posts: 6,330
You are wasting your time and money. I've done about every little crap thing you could do to the 2.5 and none of it made a hill of beans to actually making the Jeep any different. You (and anyone else here) will tell yourself, "yeah, I can feel it!", but it's just not going to magically change your overall situation of low 100's HP pushing a 3500 lb box. I eventually went to 33" tires and the only change I made to make mine drivable again was re-gearing to 4.88 (you now have 4.10).

You want nice power, enough to push a modded Jeep? Swap the motor or buy a different Jeep.
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'93 YJ, '02 GM 4.3 Vortec V6, SOA, dual ARB's, 8.8+D30(w/WarnHubs), 4.88 gears, 35" BFG KM2's, AX15, 15x7 wheels, NP231+4:1+SYE+2LO, York OBA, Warn M8000, no top or doors Apr-Oct.
Member and Web guy: New Mexico 4 Wheelers My Truck Page on NM4W Site
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Unread 10-01-2013, 06:46 AM   #6
mikes95YJ
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1995 YJ Wrangler 
 
Join Date: Sep 2011
Location: Greensburg, PA
Posts: 146
i have a 2.5L with 35's. drive it down a freeway at 60mph everyday for 40 min. only thing i did has put a header on and we had the intake bored out. you can put a 4.0L throttle body on a 2.5. thats where i get my power from, also have a ford 8.8 and dana 30 which both have 4.88 gears
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Unread 10-01-2013, 09:14 AM   #7
Lemoore-on
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1992 YJ Wrangler 
 
Join Date: Jul 2010
Location: CA
Posts: 578
If you are not going to go any bigger in tire size the best thing you could do is re-gear to 4.56's. I ran the 4.10's & 31" tire combo for a couple of years. I re-geared to 4.88's and ran the 31's for a few months till I got the 33's.
It made a big difference.

Or you could go back to a stock sized tire...........

There is nothing you can do to that motor that will = the right gear/tire combo.
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