Custom Air Intake 2 mpg

BeepBeepJeepJeep · **Posted:** Tue Jul 10, 2007 2:11 pm

dieselenthusiast wrote:

frankblack wrote:

I stacked three intake tubes from the stock air box through the grill similar to what you have done...got rid of the K&N and switched to an Amsoil filter. I have also slowed down quite a bit and am consistently getting 23.5 + mpg's....I used to get 18 mpg....this is allowing me to eliminate 1 fillup per month....thanks!

any updates since you first posted your custom air intake system?

Excellent news. Do you have any pictures to post? We moved from Missouri to Ulysses, Kansas which is near the Colorado Border. My wife drove with the A/C running and she averaged 23 miles per gallon the entire trip. We climbed elevation starting in Missouri at 1,324 feet and slowly climbed to 3,057 feet in Ulysses. Can you feel any power difference? I would like to do something a little more clean looking and perfect a few things on my air intake. I really enjoyed doing it and the cost was minimal for parts. The fuel savings are nice and will add up over time. More importantly I feel like the engine is more efficient.

Pictures would be great. I just got done lifting my jeep and putting bigger tires on it and i'm averaging 17.1mpg even while babying it. I was getting 20 when it was stock

frankblack · **Joined:** Tue Jul 03, 2007 11:11 am **Posts:** 16

23 mpg's climbing with the AC is awesome...like I've said, I've really slowed down quite a bit in my driving habits and have also eliminated the AC usage...I need to see what AC usage and faster highway speeds will do...

I do notice a power difference with the extra air...I have a Fastman tb on order and am anxious to see what that will do also...

What is an aeroturbine?

Not sure how to post pics, but basically there are 2-1.5" x 14" tubes and 1-1.25" x 14" tube stacked with a straight shot to the grill...

2002 cactus green renegade

Phadeout · **Posted:** Wed Jul 11, 2007 1:13 pm

frankblack wrote:

23 mpg's climbing with the AC is awesome...like I've said, I've really slowed down quite a bit in my driving habits and have also eliminated the AC usage...I need to see what AC usage and faster highway speeds will do...

I do notice a power difference with the extra air...I have a Fastman tb on order and am anxious to see what that will do also...

What is an aeroturbine?

Not sure how to post pics, but basically there are 2-1.5" x 14" tubes and 1-1.25" x 14" tube stacked with a straight shot to the grill...

2002 cactus green renegade

Heya,

Out of curiosity on doing this myself soon, where/what type of tubing are you using?

I can't seem to find any nice tubing that isn't "corrugated". I'd like to find some nice rubber hoses to do this, but can't seem to find where to look. Maybe a place that deals with heavy duty machinery would have this type of tubing (large rubber hoses for smooth airflow).

frankblack · **Joined:** Tue Jul 03, 2007 11:11 am **Posts:** 16

just go to any hardware store for plastic plumbing pipes...you can usually find some type of plumbing repair kit with a straight 14" tube...I pretty much followed the initial link in this forum to get started but I found that I was able to "stack" 3 tubes from the air box to the grille...after cutting holes in the air box and fitting the tubes in, I did use a waterproof sealer (Goop - marine applications) around the tubes in the cut air box holes...

KJGREECE · **Posted:** Thu Jul 12, 2007 2:19 am

Hi guys, greetings from greece. I'm watching this topic for a long time, and i'm going to fab an intake tube. I'm using the K&N drop in filter, but i want to install an AMSOIL filter. Does anybody have the part number for the 2.4L engine air filter.
Thank you

frankblack · **Joined:** Tue Jul 03, 2007 11:11 am **Posts:** 16

2004 JEEP LIBERTY 2.4L 4-cyl Engine Code 1

FILTERS
Oil Filter........ EAO57 AMSOIL Ea Oil Filter
Oil Filter........ 51348 WIX 51348 Oil Filter
Oil Vapor Filter........ N/R
Air Filter........ 42156 WIX 42156 Air Filter (O)
Fuel Filter........ N/S
Trans Filter........ N/A
Cabin Filter........ N/A

BeepBeepJeepJeep · **Posted:** Fri Jul 13, 2007 10:56 am

To confirm: Is it correct that I won't need anything else besides the sink repair kit at walmart?

ProjektKJ · **Posted:** Fri Jul 13, 2007 11:16 am

this whole thing is seems like it would work well however...

what if you get that bad boy dirty, like you should, doesnt this just basically force any mud, water, or both, directly into the air box and im assuming do nothing good?

BeepBeepJeepJeep · **Posted:** Fri Jul 13, 2007 11:24 am

ProjektKJ wrote:

this whole thing is seems like it would work well however...

what if you get that bad boy dirty, like you should, doesnt this just basically force any mud, water, or both, directly into the air box and im assuming do nothing good?

I thought about that as well but my plan is to plug that the end of the tube up when I go off roading...

Fulltimer · **Posted:** Fri Jul 13, 2007 12:17 pm

I found a company, US Plastic Corp., that makes plastic funnels. The neck OD is: 1 3/4" , 2", 3" & 4". Cut down the big end and use a heat gun to reshape it from round to rectangular. It should act as a pretty good air scoop.

Terry

jdumont · **Posted:** Fri Jul 13, 2007 12:19 pm

Interesting stuff here guys, I may have to look into this as well. Has anyone insulated the tube from the heat though. The engine compartment gets pretty hot in the summer so any "cool" air you bring in there will rapidly heat up as the pipe gets hot from the engine... You could be ramming "hot" air in instead of what you think is happening. Plastic is a good start. I had thought about going to a junk yard and getting some of the stock plastic (not sure what type) air hoses from random cars and making something up. THose prob offer the best insulation for the money....

sandracer · **Posted:** Fri Jul 13, 2007 12:33 pm

It seems, to me, like the cooler air traveling in from the grill would keep the pipe fairly cool. Although, I suppose one could fab up something using exhaust tubing and then wrap it like some some motorcycle builders do.

Gris · **Posted:** Fri Jul 13, 2007 12:53 pm

I have an AEM tube with an Amsoil Ea Cone on it. The top of the cone, instead of a cap, has an inverted cone going back down into the filter...

I think I am going to try this with 3" PVC or ducting and insert it right into that inverted cone to really FORCE it into the filter and pipe.

KJGREECE · **Posted:** Fri Jul 13, 2007 1:03 pm

frankblack wrote:

2004 JEEP LIBERTY 2.4L 4-cyl Engine Code 1

FILTERS
Oil Filter........ EAO57 AMSOIL Ea Oil Filter
Oil Filter........ 51348 WIX 51348 Oil Filter
Oil Vapor Filter........ N/R
Air Filter........ 42156 WIX 42156 Air Filter (O)
Fuel Filter........ N/S
Trans Filter........ N/A
Cabin Filter........ N/A

Thank you guys.

Custom Air Intake 2 mpg

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