Power add ons for 2001 Jeep TJ with 4.0 l

[after6queers]

I have been looking at a few options to get some more power out of my jeep and was wondering if anyone has tried any of them or could make any other suggestions.
Edge products makes a module that comes with new throttle body...seems to be around $800 and says I should get 20% increase in power
New exhaust...what would be the largest diameter that would be suggested?
Any other ideas?

[dac]

the edge kit (throttle body chip and CAI) has a decent seat of pants feel.  Mopac is probably the best place to get it.  The throttle response is better with it.

Cat back helped, but headers seemed to add more.

I believe the inlet to the muffler is 2 1/4".  Most kits should be 2 1/4" in and 2 1/2" out. Magnaflow makes a pretty good kit, sounds good too.  I might be wrong on this but if you do the whole exhaust you could go with 2 1/2" all the way.  Just don't go too big as it won't help you.

They all help but it adds up quick.  I'm still running 33's with 3.73 gears without too much trouble.  It'll pull some hills in 5th still, can do 120 pretty easy on the highway, any slower and it bogs just a little, depends how windy it is.  Still planning to re-gear anyways though.

If you've got money burning a hole in your pocket, go for it, won't hurt any.  For highway driving I'd say it's worth it.  I'm finding for some of the steep short climbs I could use a slower crawl speed though.

[hps4evr]

x2. dac is right. a good exhaust helps. a good header will help if you have the single down pipe manifold. i cannot remember if the 2001 have the single or dual outlet manifold. the dual style doesnt seem to gain as much as the single outlet earlier tj's. air cleaner with bigger throtle body will help it breath better. an electric fan helps too. after that its either a stroker kit, boost or gears... or all of the above:)

[Bnine]

The reason the gains are so small (and mostly fictional) with intake and exhaust add ons is because the largest restriction is in the cylinder head and mostly due to the Cam profile.

In order to really capture gains with intake and exhaust mods a cam change is a must. Some head work would help as well.

I recommend avoiding the edge. All these piggy backs due is increase ignition timing and injector pulse at wide open throttle. Not very usefull.

A cam swap will cost less even using an installer and make more power.

[parabs]

The reason the gains are so small (and mostly fictional) with intake and exhaust add ons is because the largest restriction is in the cylinder head and mostly due to the Cam profile.

In order to really capture gains with intake and exhaust mods a cam change is a must. Some head work would help as well.

I recommend avoiding the edge. All these piggy backs due is increase ignition timing and injector pulse at wide open throttle. Not very usefull.

A cam swap will cost less even using an installer and make more power.

as a 4.0l jeep noob, what is a good cam for this engine?  I guess I should define good, something that creates more low end power...after all, that is what we are all after.

I would also like to add to this, in Calgary, we are getting killed by the elevation.  I was recently working at about 1100ft above sea level, and the jeep had gobs of power compared to Calgary at 3500 ft.

I have read that every 1000ft above sea level you lose 10%, so if you start with 200hp, at 3500ft, you would end up with ~139 crank hp. 

[Bnine]

Yeah, the 10% is close. Bit high, but close. We do suffer here from elevation.

Comp cams 232-64 or 68. I forget the exact number. I run it in my stroker, and the bottom end is extreme to say the least.

By the way, the late model issue with cams is just a spring an retaining button. Hesco sells them to convert the newer motors so that they use the old cams.

[parabs]

Yeah, the 10% is close. Bit high, but close. We do suffer here from elevation.

Comp cams 232-64 or 68. I forget the exact number. I run it in my stroker, and the bottom end is extreme to say the least.

By the way, the late model issue with cams is just a spring an retaining button. Hesco sells them to convert the newer motors so that they use the old cams.

Thats the info I was looking for!  Great, thanks a lot!