more hp, less money

[alek]

alright, so - i want to increase the HP of my '99 4.0L I6 XJ... and i want to try and keep the money spending a little low. i'm not looking to go all-out with the motor to squeeze as much HP out of it as i can - i just want to add a bit more. i've already put on a cool air intake, and i'm in the process of chipping it. any other suggestions?

 

[BBeach]

Check out this website, he's a jeep performance guru. Try searching as well.

http://www.jeep4.0performance.4mg.com/

 

[Dr. Dyno]

Don't waste your time and money chipping it. Do the basics first:

Cold air intake
62mm TB
62mm TB spacer
Header with downpipe
Cat & cat-back

 

[OCMI_Teddy]

Or you can fold your rear seats down and put a JATO in the back. Gives you a very nice increase in HP........

 

[evil dead]

less weight IS more power clean out your junk
and as suggested do the basics first then look at injectors and chip it and port your head and cam it and and and ...dude it truly is endless

 

[evil dead]

oh and maintanance plugs wires cap rotor a hotter coil fluid changes and injector cleaner it could surprise you if your maintanance is lacking and i mean all the fluids tranny t case and diffs as well


(less friction IS more power)

 

[XJhabitat]

first off do a good exhaust to go with your intake
i hear from everyone that the chips are worthless
bookmark these websites

http://www.jeep4.0performance.4mg.com/
http://www.go.jeep-xj.info/

 

[Dr. Dyno]

...and when you've maxed out doing bolt-on performance mods on your 4.0, bookmark this site:

http://www.angelfire.com/my/fan/stroker.html

 

[cheapjeep]

Cam's get you a lot of bang for the buck.

 

[BBeach]

Cam's get you a lot of bang for the buck.

Its a lot of work though.

 

[Dr. Dyno]

Cam's get you a lot of bang for the buck.

Not exactly. When you take into account the cost of the cam, lifters, upper gasket set, and labor (around $500 if you're not doing it yourself), the whole job can end up costing close to $1000 in parts and labor just to gain 10-15hp.
A cam swap is probably the last item you'd do after you've done every external performance mod possible plus ported head and roller rockers.