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Old 05-31-2013, 11:46 PM   #1
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2.5 performance

I kinda want to get a good accurate awnser. Would a Cold Air Intake/chip/exhaust increase my performance much with 4-10 gears ?

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Old 06-01-2013, 12:44 AM   #2
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I kinda want to get a good accurate awnser. Would a Cold Air Intake/chip/exhaust increase my performance much with 4-10 gears ?
Nope, and your gears have nothing to do with performance gains from a cai/ chip/ exhaust. Personally I along with others dont believe its worth the $$$. That being said i have a cai/ exhaust on mine, why... Because i built it all myself, had the muffler, had the cone filter. I refuse to pay $300 for a programmer.

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Old 06-01-2013, 05:43 AM   #3
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Okay. Thanks for your opinion.
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Old 06-01-2013, 06:39 AM   #4
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I kinda want to get a good accurate awnser. Would a Cold Air Intake/chip/exhaust increase my performance much with 4-10 gears ?
All they do is increase the profits of the companies that sell them.
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Old 06-01-2013, 06:51 AM   #5
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There are about 26,000 threads about 2.5L power increases, CAI/catback/Programmers don't work, period, they just don't. The only way to see more out of your 2.5 is to regear it, I have the 2.5, I have tried all this, when I regeared to 4:88 I had to watch my speeds again and even saw a tiny little bit better mpg (on 33"s).

Do a google search on "Jeep 2.5 mods" and you'll find a few dozen threads and even a few website dedicated to getting more out of the 2.5, do a lot of reading, and a lot of thinking about your budget, what you want out of your Jeep, how attached to it you are, and what kind of wheeling your end goal is.

Your 2.5 can be the best engine out there, there are some real advantages to a 2.5 if your doing a lot of technical rock climbing, but the regear is going to be the best thing you've ever done.
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Old 06-01-2013, 11:48 AM   #6
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I appreciate it! Jeep = money pit
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Old 06-01-2013, 12:29 PM   #7
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You want a money pit......I had a 1954 corvette back on the 70's now that was a money pit.
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Retired my 94 YJ 4cyl 5spd @ 200K
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Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
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Old 06-01-2013, 12:34 PM   #8
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We have a 1968 Ford F-100 with a 351 windsor. Reg. cab long bed. She, is a money pit.
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Old 06-01-2013, 12:51 PM   #9
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Well I dumped my money pit and picked up a 62 Chevy Impala ragtop. Now that was a fun car and if it blew up I would just pull the tags and leave it on the side of the road.
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Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
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Old 06-01-2013, 01:21 PM   #10
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I had a friend with a 2.5 in a Cherokee in highschool. he put every type of performance mod he could find on it all to gain at best 2 mph on the highway. that is until he threw a rod and had to rebuild the engine. he bored it over .035" and it did gain a little more pep. but I stand by that it was more the total engine rebuild that gave him most of the power gain. if you really want more power I recommend either an engine swap, or get a 4.0 jeep. personally my 2.5 does everything I ever need. and cant justify the cost and work of an engine swap. some can. try other things like keeping your weight down, having a soft top, and half, or better yet soft doors. cut down on aftermarket add ons like bumpers, rocker panels, roof racks, gas can mounts etc.
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Old 06-01-2013, 01:26 PM   #11
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Turbo that sucker!
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Old 06-01-2013, 01:27 PM   #12
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Turbo that sucker!
may as well swap motors?
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Old 06-01-2013, 02:22 PM   #13
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may as well swap motors?
Well if you want more performance out of a 4cylinder, then turbo is the way to go! Lets just answer every new "how do I get more power out of a 4 banger?" Post with that answer!
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Old 06-01-2013, 06:44 PM   #14
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I don't want any more power from my 4 banger. Have not received a speeding ticket in many years because of the lack of power. I used to be the biggest a$$hole on the road until I told myself I was not being a good example to my kids and did not want them to say.....you drive like this so don't tell me I cannot.
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Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
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Old 06-01-2013, 06:50 PM   #15
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I don't want any more power from my 4 banger. Have not received a speeding ticket in many years because of the lack of power. I used to be the biggest a$$hole on the road until I told myself I was not being a good example to my kids and did not want them to say.....you drive like this so don't tell me I cannot.
America needs more responsible parents like you!
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Old 06-01-2013, 07:00 PM   #16
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America needs more responsible parents like you!
Thanks, I am proud of each of my 4 children. They are all self sufficient and do what ever needs to be done to support themselves.
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Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
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Old 06-01-2013, 11:09 PM   #17
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Yeah man. Better safe then sorry. A four-banger Jeep Wrangler is a perfect 4X4 vehicle for mudding, MPG, and not a extremely fast vehicle.

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