XJ Air Intake

[dropseys]

I want to install an intake on my XJ, but I don't know which intake is best. Rustys has a cheap one that looks like it will work. I am looking to squeeze a little more performance out of the engine right now. I am going to also do the throttle body and spacer along with the exhaust system. I am a firm believer that any increase in HP and torque is worth it. I like to push all of our cars to the maximum potential while still being streetable. So far I have seen:
1) a K&N CAI
2) Rustys CAI
3) AEM CAI
4) AIR RAID CAI

any suggestions

[Snitty]

Are you really going with a COLD air intake, or just a cone intake?

Either way, I think making your own is the most economical way to go.

[dropseys]

I was wrong sorry, not a cold air intake, just cone intake. Cold air requires a lower position which i don't want to do.

[LGR]

i'm usings rusty's tube with a K&N cone on it and love it. i vote rusty's

[DansGreyMj]

i made my own with filter for under fifty bucks with all pepboys parts

[Snitty]

Yeah, that's the reason I ask... If you are not going true cold air... then you can save yourself a bit of money and gain a bunch of style points by making your own... PVC makes great tubing and is easy to work with... If you want to go with a cone intake, you can use the stock elbow and adapt some piping onto the end to extend it to where you want.... done... cheap... experience

[Bounty__Hunter]

Rusty's, everything else is more money to accomplish the same thing.

[90Xjay]

I voted for Rusty's but that was only because there was no "other" choice in your poll.
I bought mine from a guy off Ebay who makes them. His is about 1/2 the cost and is a very nice exact fit which comes with a K&N cone filter.
I could not be happier.

[jchooper12]

So being new to Jeeps and really just off road vehicles, what is the difference between a cold air intake and a cone intake? Do they help with hp and mpg? I have seen that but there is never a definitive answer. Also, can you add one without messing with warrenty?

[Bounty__Hunter]

Originally Posted by jchooper12

So being new to Jeeps and really just off road vehicles, what is the difference between a cold air intake and a cone intake? Do they help with hp and mpg? I have seen that but there is never a definitive answer. Also, can you add one without messing with warrenty?

A cold air intake isolates the filter from the heat in the engine bay, cold air is more dense and makes for more power. Tough to make a cold-air intake for an offroad vehicle and not have it vulnerable to water ingestion.

The conical filter setup is simply an airtube with a conical K&N (or similar) filter attached to the end. THe conical filters flow a ton more air than stock airboxes and even drop-in K&N filters.

An intake setup will only void your warranty if it's evident that the modification caused the malfunction or failure. This is according to the Magnusson-Moss Warranty Act (google it).

[jchooper12]

So sounds like a conical filter setup is a better bet. So how would adding a conical filter setup and also installing a Throttle Body Spacer help the overall hp and mpg? So if you get 5hp more installing the filter would you get another 5 to 10 by installing the throttle body spacer? Also for mpg? Hope there are not stupid questions

	Throttle body spacer A throttle body spacer is designed to improve the quality of the airflow, allowing air that is more condensed and, thus, more oxygen laden, to enter the combustion chamber. The result of this is a more efficient burn, which serves to release more energy from the fuel, making more horsepower available.

[dropseys]

it all helps the engine get more air for more power. But you also have to get it out better as the stock exhaust is kinked up very restrictive.

[90growler]

Originally Posted by DansGreyMj

i made my own with filter for under fifty bucks with all pepboys parts

I bought a cheapo cone intake on ebay for like $25 from some store called chrome intakes. It makes a difference and sounds cool too.

[jchooper12]

What would be the best Air Intake system for my 2006 Wragler Unlimiter 4.0? I dont want to build one, just rather pay a little.

[Bounty__Hunter]

If they haven't changed the airtube from earlier 4.0L TJ's I'd just cut the end off the stock tube and attach a conical filter. I've got a 4.0L TJ airtube on my 2.5L YJ from an '04 Rubicon.

[TwistedCopper]

just remove the restrictor and use a K&N "drop-in" filter.

Better protection from taking in water that way.

[Snitty]

I used to have a cone filter. I found that I ended up pulling water through it too much. It also got muddy very often. I actually ended up driving home with my sock over the air tube one day after I got sick of the mud.

After that, I cut the fender side wall out of my stock air box and drilled some water holes in the bottom of it. I didn't quite notice much of a power difference, but a filter alone never usually is very obvious. I konw it gets much better air than the stock setup and it drains water very well

[TwistedCopper]

Originally Posted by TwistedCopper

just remove the restrictor and use a K&N "drop-in" filter.

Better protection from taking in water that way.

oops, you have an xj (no restrictor).

I'd get whichever is cheapest but legal.

[dropseys]

I actually found, but can't find any more an intake box that has a clear plastic cover over the filter so it looks like a stok box for protection but still had a cone on it. I think it may be better than an open cone set up. Do any of you guys think the pre-filter will work or will it kill the air flow?

[jchooper12]

I just installed an AirRaid Cone intake with tube on my 06 Wrangler and it made a significant difference in the HP. The jeep is much more responsive now and gets much better acceleration. Not sure on MPG but I am sure if I drive nicley it will do better. I am thinking of putting the throttle body lift on next.