450 air boot doze it help

[83879902]

hi anyone have a pic of a 450 air boot and doze it help i have a full lrd pipe jet kit and k-n with pro flow air lid off thanks

[83879902]

hi i was talking about the air intake boot from air box to carb tanks

[quad97]

I used a 400ex boot. I did alot of work on mine all at one time so I cannot tell you exactly how much it helped, but it is far less restrictive than the stocker.

[83879902]

thanks will it bolt right on and fit or do i have to modify it

[airmobile101]

I had to trim mine about an inch. Now, many people say it doesn't require you to trim it,but I have a DVX,so the plastic is different. Hell, I raised my airbox about an inch and its still tight. So, if its a Z, you might not have to do crap but slap it on.

[83879902]

yes its a z thanks for the help i will try it

[cataway]

Originally posted by 83879902
hi anyone have a pic of a 450 air boot and doze it help i have a full lrd pipe jet kit and k-n with pro flow air lid off thanks
which year and model are you talking ?
this is a 06 trx450r boot http://i44.photobucket.com/albums/f9/cataway/Picture036.jpg
it will fit nicely to a FCR carb but does have a 4'' inlet

06 450r boot compared to a cut 400ex boot ,cut boot will not fit to a ltz carb
http://i44.photobucket.com/albums/f9/cataway/9-21-2007LS057.jpg
a 04 trx 450r boot next to stock ltz boot
http://i44.photobucket.com/albums/f9/cataway/3-28-2007LS287.jpg
the 04 boot only will fit the FCR if the FCR has a R A T stack or its equivalent

FCR with rat
http://i44.photobucket.com/albums/f9/cataway/9-21-2007LS061.jpg

[83879902]

hi i have a 06 z stock carb what is the best one for that. thanks for the pics nice

[cataway]

Originally posted by 83879902
hi i have a 06 z stock carb what is the best one for that. thanks for the pics nice
are you willing to modify your air box ?

[jonboy]

Hey Cataway, where did you get your RAT stack for the FCR?

[cataway]

http://www.venomperformance.net/pages/index.cfm

its an easy install ,but you will have to do some ''fit'' , if you have a die grinder its not much of a problem ,you will see after its been put on the carb that theres some metal to remove in the bell area
mostly on the bottem part.
expecet it to cost at least $65 .

[83879902]

i would like to keep it stock if possible thanks

[cataway]

LOL i had a fear you were going to say some thing like that ,thing
is the only boot that correctly fits the LTZ is the one that came on it.
a lot of guys are using a trx400ex boot how ever its not even close to a good fit ,honestly the hole in the box is to low ,so either the box has to be raised or the hole has to be adjusted higher and the hole is easer in my opinion.
for the HP gains its well worth it, and cheep HP is the best HP.
your going to want to shorten the boot ,cut the boot on the bigger end do not touch the small end as you will discover right away it will no longer attaché to your carb.
when your done cutting on it it should look some thing like thishttp://i44.photobucket.com/albums/f9/cataway/02-02-2008LS009.jpg

were the stock boot attached to the box, cut it ,grind it, do what ever but get that flange off there ,then elongate the hole up wards ,what we're tiring to do is make the hole big enough to
slip a short piece of 3'' muffler pipe through the box into the boot and as well into the filter .yes there is going to be a hole in the front of the box under the pipe ,you can fill it if you want to but
i don't find much reason to do that .

ya i know some guys have said that they have gotten the 400 ex boot to attached to the box flange but what they don't tell you is that they squashed the boot down onto the shock mount tower
phiff ,if your going to do that just leave the stock boot on.

[83879902]

thanks for all your help i will try the 400 ex boot i will look on ebay for one

[gsxrkneedragger]

cataway, how do you attach the 3" muffler piece to the inside of the airbox? and how far in do you stick it? i got the 400ex boot, but didn't cut the box yet cuz i didn't have your write up about it. i noticed that the ex boot is longer then the stocker so does that just go into the box too? and how does it attach to the box itself? thanks.

[cataway]

Originally posted by gsxrkneedragger
cataway, how do you attach the 3" muffler piece to the inside of the airbox? and how far in do you stick it? i got the 400ex boot, but didn't cut the box yet cuz i didn't have your write up about it. i noticed that the ex boot is longer then the stocker so does that just go into the box too? and how does it attach to the box itself? thanks. attach ?? its really not attached to the box, the muff pipe go's in to the box, the pipe just go's through a new hole you are going to make .
with a hose clamp on the boot on out side of the box and on the inside of the box another hose clamp on the filter.
like you say the boot is to long ,yes the boot has to be shortened.
only cut the big end of the boot so it looks like this.

http://i44.photobucket.com/albums/f9/cataway/02-02-2008LS009.jpg

you may if you wish use a piece of aluminum attached to the box
with screws or pop rivetes ,with a 3 inch hole placed were ever it needs to be .
this should give you an idea of what i'm talking about
http://i44.photobucket.com/albums/f9/cataway/P1180021.jpg

[gsxrkneedragger]

thanks for the info. i'm going to have to work on that this weekend. how thick is that aluminum that you put on your box? it doesn't look like its that thick.

[cataway]

Originally posted by gsxrkneedragger
thanks for the info. i'm going to have to work on that this weekend. how thick is that aluminum that you put on your box? it doesn't look like its that thick.
thats not my box ,thats a pic i stole to show you what could be done. what i did was some what different than that ,....................
i dont even have a air box.
but some people feel they need one , you apparently feel you do, thats ok i know your fear and it may be a well founded belief, me i stay out of the water.
as for what thickness to use ,i would use some thing like what a road sign is made of

[cataway]

i must point out that I'm not suggesting that you use a road sign,
that would be illegal.:)

[RATPACK Z400]

So basicly the boots from the 400ex and 450r ARE better than the stock unit cause its larger boot diameter so it flows more air?

[cataway]

as can be seen in this pic the ex boot is much straighter and round inside , you can see through the ex boot ,thats some thing that nearly imposable with the ltz boot.
straighter means less restrictions, trust me it works it gave me all
most a 3 hp increase :)

http://i44.photobucket.com/albums/f9/cataway/9-21-2007LS027.jpg

[jonboy]

Yes the 400ex boot is definately worth the trouble. Mine ran good enough to power me out of turns into jumps that I couldnt do prior. The picture of the boot attached to the stock box is mine. If you do it like I did you will need to make an adjustable bracket like I did to mount it. Look at the pic again and you can see what I'm talking about. I may sel this set up and make an aluminum airbox because I am installing an FCR carb.

[jonboy]

like this

[cataway]

when i was using the ex boot i did some thing like that
http://i44.photobucket.com/albums/f9/cataway/3-28-2007LS233.jpg

but it moved the box so far back that i had to cut the box and
part of the battery box to get it to fit

http://i44.photobucket.com/albums/f9/cataway/3-28-2007LS243.jpg

[jonboy]

Holy dirty filter Batman, Haha! Yours sat farther back because it was installed on the box differently. My boot inserted in the hole and seated on the flange like it did on the factory 400ex airbox. Less head ache for fitment and no cutting the plastics.

[cataway]

yep, thats why i changed it ,then i changed it again and then i changed it to some thing better.
the ex boot is a good way to go and way better than what the LTZ comes with , even so the ex boot even shorten is still to long
for best performance.
what i have now did require a bit more engineering , the only thing that even come close to what i have done is te esr ,but if i feel the need i can rather convently put the air box back on ,it acts as a splash gard.


i dont know if the way i have now if it would work with a BSR carb
and i dont even know if i care

[jonboy]

Yeah I.ve got the FCR and there is no turning back for me either. I think I have a solution to my intake alignment issue also. I am getting the NOSS machine Stack and either making a fiberglass or aluminum airbox. I still trail ride from time to time and I dont hold back for mud and water so the box is a nessecity for me.

[cataway]

I'm assuming the bell on the noss is going to be bigger ,is that going to be a problem ?

[jonboy]

It makes it about 3/4 " longer the o.d. is the same.

[cataway]

then that should work out rather well ,you may even get to shorten the connecting hose.
mixxer did some experiments and found that if the esr is shortened that he gained a HP ,that was on a 450r , i really cant say what that would do for you.
i went with the RAT stack , 1 because i under stand th importance of a velocity stack ,and the RAT was going to have a bigger OD (2.45'')
and its a little longer, which helped to make the fit of the boot i'm using.
i did have to use a die grinder on the inside to get a perfict fit ,no biggie.
http://i44.photobucket.com/albums/f9/cataway/9-21-2007LS061.jpg

[vicsdvx400]

Originally posted by cataway
as can be seen in this pic the ex boot is much straighter and round inside , you can see through the ex boot ,thats some thing that nearly imposable with the ltz boot.
straighter means less restrictions, trust me it works it gave me all
most a 3 hp increase :)

http://i44.photobucket.com/albums/f9/cataway/9-21-2007LS027.jpg
hi cataway... i don't know you, but i see
a lot of post from you on this site, and well
it seems like you know your stuff pretty well!
I just got done with the 400ex boot tonight and
just fired up my quad really quick for about a minute
or so and it sounds a little rough.. Will it be running
a little lean since it's taking in more air??? Am I going
to need to jet my carb to compensate for the additional
air coming in?? I have a dvx400 with just a slip on big gun
exhaust and the 400ex boot and will be getting a header
pipe within the next week or so... thanks a lot in advance.