Small air box mod

[GIXERHP]

well i did this in all of 20 minutes tonight after work! worked great. i believe i feel a difference.. but until i get a pc and tune the bike i'm not gonna feel any of the mods i've done..that i can tell oh well!

Its not hard to do!

Now go and get a pc, and get the bike tuned properly!

 

[castagear]

Have just done this mod as well, but also added a BMC race filter and factory pro velocity stacks, and had my PC111 remapped, definately worth the effort, even before the dyno tune, and the sound coming from the intake is now

 

[Boostdprotegelx]

well i did this in all of 20 minutes tonight after work! worked great. i believe i feel a difference.. but until i get a pc and tune the bike i'm not gonna feel any of the mods i've done..that i can tell oh well!

Its not hard to do!  

Now go and get a pc, and get the bike tuned properly!

money son!! lol. as ssoon as i get money. i have dibs on a pc right now.. anyone know a good tune shop in md for bikes? and where can i download maps for the pc for my mods?

 

[IAMKS]

CAN I DO THIS TO A PRETTY MUCH STOCK 2002 BUSA. STOCK CANS AND I CAN TELL THAT IT HAS BEEN MODDED AT ALL.

 

[cipher5791]

I did the mod last week swapped my stock filter for a K&N Filter. Man I feel the difference in throttle response.

 

[rolandag2]

ok i just did the mod in about 20 minutes, next question do I need a custom tune or will it run fine like that.

 

[Shean]

Hey guys I hope you get this right away but I need to know if I can do this on my 08 busa. I see all the fun you guys are having I want a peice of the action to.

 

[Professor]

Hey guys I hope you get this right away but I need to know if I can do this on my 08 busa. I see all the fun you guys are having I want a peice of the action to.

The 08 has an entirely different design than the 99-07...

 

[beaquel]

ok i just did the mod in about 20 minutes, next question do I need a custom tune or will it run fine like that.

Bump for an answer. What exactly does this mod do? I like having a firm understanding of the functionality before I go hacking into my bike.

 

[Shean]

well as far as I canuderstand from the thread the mod makes the bike breath better which means more power.

 

[metric03]

i thought for sure there was a thread some where about another airbox mod, are there pictures out there of the pair valve mod, i could get the plates my self if necessary.

 

[GIXERHP]

i thought for sure there was a thread some where about another airbox mod, are there pictures out there of the pair valve mod, i could get the plates my self if necessary.

One minute please

 

[GIXERHP]

Here you go,

This works well or a marble in the hose works also!

https://www.hayabusa.org/forum/new-2008-busa-threads/88656-pair-reed-valve-block-off.html

 

[metric03]

thanks man, helped alot.

 

[kjcili]

Been playing with this mod for a couple weeks, and got about 500 miles in the interim, and all I can say is poop, lost all kinds of top end; BUT, re-mapping may correct that, I just don't have the spare cash for re-dynoing now, so maybe next year. Can't say I noticed anything on the bottom end, but the top end definitely drags ass now. Hell, my boy on his 1000RR pulls on me at top end now. Tell me that ain't a depresser. It really doesn't make sense because at W.O.T., anything from a drag car to a super-bike can't do anything but love to breathe at top end, but not my girl. I've even been playing with spark plug heat ranges, monitoring if I'm to rich or lean, but with the air box mod, definitley lean!!!!! Be careful brothers, LEAN IS BAD!!!!!

 

[metric03]

^^^, that's wierd, after i did this mod i did a top speed pull, and it was screaming fast, reached the limiter in no time, i don't have a programmer but i am running straight pipes, wonder what's going on?

 

[metric03]

while i'm here, another question. if this is the small mod, what would the large one be, don't remember seeing it anywhere?

 

[kjcili]

it's just called the small air box mod because of the design of our air box and what has to be done to mod it. re-confirmed, took out the mod, went out to my little stretch where i can let her go, and yep, big pull at top end. don't know; don't get it; don't fricken understand cuz the laws of physics say it SHOULD pull harder at w.o.t., but not my girl. did notice a lil lag in the low-end now that I switched it back, which really don't make sense. oh well, save some loot over the winter, get with my boys and do some hard test & tune next spring.......

 

[nextimemike]

how did this small box mod help in hp

 

[Busashot]

while i'm here, another question. if this is the small mod, what would the large one be, don't remember seeing it anywhere?

Large mod is where nearly the whole floor is cut out and a custom foam filter is used for filtering. Best left for that have a bigger engine, cams, etc. Some say it is overkill.

how did this small box mod help in hp

Maybe another 2-3hp. A BMC Race filter may give 1hp as well. So maybe 4-5hp total at most.

You may notice a huge flat spot between 2-4k if you snap the throttle open to fast.