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Old 03-05-2012, 06:10 PM   #1
tristaur's Avatar
Join Date: Feb 2012
Location: Tucson
Posts: 13
Performance upgrades on a 2.5L

I got me a few questions and ideas and I am going to let all fo you help me make the decisions. I have a 2.5L that alot of you will say just dump but Im not quite ready for that yet. The engine is bone stock with the exception of the poweraid TB spacer. Here is what i am looking for:

Oil and filter; best synthetic blends and what weight. best oil filter? Keep in mind, I live in Tucson, Az and 90% driving being done there occasionally driving up into the AZ mountains.

Cold Air Intake?

TB upgrade? 4.0 and 2.5 have same foot print but are they the same stock TBs? Aftermarket TB?

Performance exhaust?

Spark plugs? what gap? Spark plug wires? Coil?

Injectors? Fuel rail? Fuel Rgulator?

These are the areas I am looking at. Am I missing anything? For those that will ask, and i knw it would come, The suspension is stock at the moment. I will be adding a 1.75-2.00" Lift. for weight purposes and the fact I dont aggressivly off road, it will just be the spring spacers and shocks. 30x9.5 is my intended tire size. Any other quetions, just ask. If none, all ideas and or suggestions would be awesome. Thx

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Old 03-05-2012, 11:23 PM   #2
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Please read my thread entitled "love your 4 cylinder"

Losing hours at work? Taxes up on your paycheck? Having trouble finding a doctor? Your kids trashy?

You voted for it... Stop complaining.
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Old 03-06-2012, 12:49 AM   #3
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Join Date: Dec 2011
Location: Somis, CA
Posts: 720
Not worth even trying. Re-gearing would probably be your best bet in the end. I have a 4 banger and i used to get upset about being passed by semi trucks going up grades, but now ive learned to love her for what she really is, a low speed vehicle that can take you to places people only dream of going in there big lifted trucks ( dont get me wrong i would give my left testi for a hemi in my jeep but lets be practical )
When in doubt...FLAT OUT!
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Old 03-06-2012, 01:11 AM   #4
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Join Date: Oct 2011
Location: Oregon City, OR
Posts: 5,140
The 2.5L has been around awhile and lots of attempts have been made to increase power or increase seems after all these years we are stuck with just keeping the motor maintained for the best performance, reliability and longevity.
'99 Chili Pepper TJ Wrangler "Mistress"
33x12.5 DuraTracs
Zone 4.25"
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