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Old 03-05-2012, 06:10 PM   #1
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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"

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Old 03-06-2012, 12:49 AM   #3
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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 )
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Old 03-06-2012, 01:11 AM   #4
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The 2.5L has been around awhile and lots of attempts have been made to increase power or increase MPG....it seems after all these years we are stuck with just keeping the motor maintained for the best performance, reliability and longevity.
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