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Unread 07-07-2010, 11:07 AM   #16
sh13lds21
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Quote:
Originally Posted by Neil F. View Post
He means are there any plans to put something on the Jeep where the air box was (the shelf under the hood), not where did you put the air box after you took it out.
wow that was kinda embarrassing i was thinking about just putting the stock box back in and using it for a tool box but thay was just an idea

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Unread 07-07-2010, 07:20 PM   #17
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Quote:
Originally Posted by ncbluetj View Post
Is that some sort of heat shield under your intake manifold?
When I bought my 2000 in 2004 I took it to the dealership to see if there were any free TSB upgrades, that's when they added it to my Sport at no cost...
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Unread 07-08-2010, 05:04 AM   #18
sh13lds21
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not to derail the thread but i dont want to start a new thread, so my question is should i have a 16 gallon tank or a 19 gallon tank cause i go pretty far with the fuel light on and i refill and i put in 16 or a little more, is there a way to check what tank i have?
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Unread 07-08-2010, 05:23 AM   #19
extsp2
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if you look in the thread titled "stock specifications" in this forum it says all tj's from 99 up are 19 gallon, i don't think a rubi has a different tank but i could be wrong. it says all lj's also have a 19 gallon tank.
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Unread 07-08-2010, 05:37 AM   #20
sh13lds21
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Originally Posted by extsp2 View Post
if you look in the thread titled "stock specifications" in this forum it says all tj's from 99 up are 19 gallon, i don't think a rubi has a different tank but i could be wrong. it says all lj's also have a 19 gallon tank.
thanks i forgot to look there. so i guess i need to do the fuel tank mod
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Unread 07-08-2010, 07:18 AM   #21
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Quote:
Originally Posted by sh13lds21 View Post
thanks i forgot to look there. so i guess i need to do the fuel tank mod
There's nothing to mod on your tank?...
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Unread 07-08-2010, 10:50 AM   #22
thisgardengrove
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What year is that intake box from and looks like you used the stock air box cone attatchment? i'd like to do this but i dont now how well my K&N tube will work
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Unread 07-08-2010, 01:25 PM   #23
sh13lds21
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Originally Posted by thisgardengrove View Post
What year is that intake box from and looks like you used the stock air box cone attatchment? i'd like to do this but i dont now how well my K&N tube will work
its from a 97 but its on different years to, and the only stock part is the intake tube, and the 90* tube i got off line. yeah idk how the kn intake tube would work cause its bent differently, you didnt keep your stock one?
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Unread 07-08-2010, 02:04 PM   #24
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Quote:
Originally Posted by Knuckelhead View Post
There's nothing to mod on your tank?...
http://www.gottrail.com/TJ/TJfueltankconversion.html
http://www.jeepforum.com/forum/f9/tj...s-same-333562/
this is what im talkin about
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Unread 07-08-2010, 02:09 PM   #25
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Quote:
Originally Posted by sh13lds21 View Post
You don't have the 15 gallon gas tank. No mod needed...
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Unread 07-08-2010, 02:26 PM   #26
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Originally Posted by sh13lds21 View Post
IMO there is more power and it sounds alot better and i gained about 1-1.5 mpg. i went from about 15-16 to 17 mpg on 4 tanks so its a pretty good gain imo
I don't want to sound offensive, but I'm questioning this...
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Unread 07-08-2010, 03:09 PM   #27
White99tj
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The windstar intake filter is also used in the Explorers with a 302, lack of air flow is not a problem.

I did this mod a few years back, at first the jeep pulled really hard and the gas mpg did improve. After a few hundred miles I was back where I was before the mod. The computer always adjust.

I only did the mod due to having hiline fenders.

Link to my junk
http://www.jeepforum.com/forum/f9/an...d-arms-593280/
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Unread 07-08-2010, 03:36 PM   #28
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I'm not questioning whether or not it restricts airflow, but whether it can improve the airflow so drastically over the stock system...which, according to a LOT of threads on this forum, it can't. Every bit of solid information that I can find says that the stock intake system is more than adequate for the 4.0's air requirements. Thus, any extra air the cowl intake can bring in...isn't needed or used. Furthermore, since the computer doesn't know what intake is feeding the throttle body, it can't adjust to it. Speed-density computers calculate air intake from readings of air pressure, air temperature and the position of the blade within the throttle body...so changes to the intake will have no real effect.

Now, if we're moving the intake to make room for something else under the hood...well, that's cool. Go for it, says me. I just don't think that it gives noticeable power...certainly nothing detectable without a dyno test.

P.S. If all it took was a cowl intake to increase mileage by 1 to 1.5 MPG, do you not think that Jeep would build them that way and advertise the hell out of it?
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Unread 07-08-2010, 06:42 PM   #29
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Quote:
Originally Posted by Sundowner View Post
P.S. If all it took was a cowl intake to increase mileage by 1 to 1.5 MPG, do you not think that Jeep would build them that way and advertise the hell out of it?
Jeep should have made them that way from the factory. Even if airflow doesn't need to be better the air being drawn in is cooler coming from there. Also higher location for water crossings.

My experience was similar to others. Probably 1.5 MPG improvement right after done, but gave some of that back over time although maybe not all of it.
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Unread 07-08-2010, 08:28 PM   #30
J03_TJ
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Quote:
Originally Posted by Sundowner View Post
I'm not questioning whether or not it restricts airflow, but whether it can improve the airflow so drastically over the stock system...which, according to a LOT of threads on this forum, it can't. Every bit of solid information that I can find says that the stock intake system is more than adequate for the 4.0's air requirements. Thus, any extra air the cowl intake can bring in...isn't needed or used. Furthermore, since the computer doesn't know what intake is feeding the throttle body, it can't adjust to it. Speed-density computers calculate air intake from readings of air pressure, air temperature and the position of the blade within the throttle body...so changes to the intake will have no real effect.

Now, if we're moving the intake to make room for something else under the hood...well, that's cool. Go for it, says me. I just don't think that it gives noticeable power...certainly nothing detectable without a dyno test.

P.S. If all it took was a cowl intake to increase mileage by 1 to 1.5 MPG, do you not think that Jeep would build them that way and advertise the hell out of it?
I think from all the reading I have done, the thought is the air coming in after this mod is outside air and not as hot as the air temp under the hood. This is the first I have read of the computer adjusting to not take advantage of the thicker air. Just my understanding, I have not done the mod.
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