Looking to add fuel milage and horsepower. Questions?

[juicy-jj]

Hey guys, I am getting ready to lift my 2002 X and am concerned about the possibility of getting lower fuel milage due to the larger tires that I am going to run after the lift. Plus a little more horsepower and tq would be nice as well! My 2002 X has over 150,x.. miles on it, so I would imagine a decent tune up would be good and possibly some performance enhancements would be nice as well.

My questions to you guys are;

1.) What do you recommend I do as far as tuning up my ride? (note- my 2002 X has a v6) Perhaps plugs, wires, coil, and ?

2.) Can anyone tell me if adding underdrive/overdrive pullys would help? If so, which ones would you recommend I replace?

3.) Are there any decently priced chips or computer mods out there?

4.) What about air intake, throttle body spacers, and muflers?

5.) Should I replace any of the sensers? O2 sensers, ect..?

Any usefull advise you could offer up my way would be greatly appreciated!

 

[HiImBrian]

There are probably 500+ threads in the Modified and Stock sub-forums talking about each of these questions already. Use the search function and you'll find PAGES of discussions on everything.

 

[Kazer]

Search, Search, and Search my friend.

although i can add that i have an Underdrive Crank Pulley, and an Overdrive water pump pulley, and i have seen increased hp and gas milage. and Electric fan conversion will also increases hp and mpg. there is a thread in the sticky for both of these mods

 

[wheelin'explorer]

Agreed with HiImBrian, and Kazer. I've found answers to all my questions like this without posting anything, just reading. Kills my time at work to! Though I did a K&N air intake, which after about the first two weeks I saw an improvement in gas milage, more than I expected really. Why I say after the first two weeks, I liked the growl that came from doing the intake so I was in the gas a bit more than usual to enjoy the sound!

 

[doug625]

I agree with the previous replies, and IMO I think you will get more benefit from an electric fan than with a cold air intake kit. Getting rid of that clutch fan makes a noticeable difference. This is just from my experience on other vehicles and everything always varies.