What the Hell does a K&N lunchbox DO

[TadMC]

Im just wondering, if its a jump in hp, I might want to do it.  and I cant find any info on it?

[mike_mike]

here's some info: http://gstwins.com/gsboard/index.php?topic=13196.0


mmm lunch

[galahs]

It stops your lunch from going soggy be increasing the airflow! 

[TadMC]

any guides on how to put it on

[galahs]

lol, ignore my stupidity from before 


from memory they just clamp straight onto your carbs?


A K&N lunch box flows more air than the standard airbox system and in some cases more than pod filters too.

More air, means you can add more fuel = more power!

Don't add more fuel (by rejetting the carbs and your bike will run lean (and maybe hot which is bad!)


Now I have a question:

Can you use the lunch box filters from a pre 2001 bike on a 2004/06?

[TadMC]

so if i were to do it (lunchbox)  I would need to rejet too?

[galahs]

It is highly advisable. 

[joedude]

so if i were to do it (lunchbox)  I would need to rejet too?

YES! Your bike will run like poo if you don't.

The K&N pod filter increases airflow to your carbs, if you don't allow your carbs to add more fuel to the mixture, you're defeating the main purpose of adding it in the first place... which is of course MORE POWER! MUAHAHAHAHA! It drastically increases power in the RPM mid range and in the top end.

With a stock exhaust, you're going to want 147.5 mains on a pre 2001 bike, and why not step your pilots up to 40's while youre at it too.

[Alphamazing]

Can you use the lunch box filters from a pre 2001 bike on a 2004/06?

Yeah, they bolt right on no matter what the year.

any guides on how to put it on

Remove tank, remove air box, remove carbs, jet accordingly, reinstall carbs, clamp lunchbox filter on, replace tank, done.

[Mandres]

Can you use the lunch box filters from a pre 2001 bike on a 2004/06?

Yeah, they bolt right on no matter what the year.

any guides on how to put it on

Remove tank, remove air box, remove carbs, jet accordingly, reinstall carbs, clamp lunchbox filter on, replace tank, done.

It's also possible to mount the filter to the carbs before reinstalling them.  That way, you're sure it's on properly and it's much easier to fit.

-M

[badguy]

With a stock exhaust, you're going to want 147.5 mains on a pre 2001 bike, and why not step your pilots up to 40's while youre at it too.

Just wondering, did you follow the rejetting matrix exactly?  As in, how many washers and how many turns on the air screw?  I'm about to get a lunchbox and some new jets for my 2000, but I've been looking for feedback on the info in the matrix.  Thanks in advance for any advice.
Mike

[joedude]

With a stock exhaust, you're going to want 147.5 mains on a pre 2001 bike, and why not step your pilots up to 40's while youre at it too.

Just wondering, did you follow the rejetting matrix exactly?  As in, how many washers and how many turns on the air screw?  I'm about to get a lunchbox and some new jets for my 2000, but I've been looking for feedback on the info in the matrix.  Thanks in advance for any advice.
Mike

Yep, I followed the Matrix pretty much to the letter. Got the Proper Jets and also got the same washers... As for the Mixture screw... I'm in Canada so the air up here is a little denser than it is far south. So I had to play with the air screws a little to get the mixture just right, but I'm talking about 1/16 of a turn at a time to get it just right here... nothing major (I probably could have left it at 2.5 but I'm a little picky)
Following the matrix should workout pretty well for you!

[badguy]

Thanks a lot joedude.  I'll find out what's in the carbs now (even though the PO said it had been rejetted, he lied about the progressive springs, so it wouldn't surprise me if the carbs were stock as well).  I ordered the lunchbox last night and I'll get the jets today after I find out if I need 40s or not.

Thanks again!

[rangerbrown]

dont use washers, jet it right.

[joedude]

but if you don't use washers, wouldn't that kill your mid range?

[Alphamazing]

but if you don't use washers, wouldn't that kill your mid range?

The '01+ bikes have 3 jets, a pilot, mid-main, and a main. The mid-main takes care of the midrange so you don't need to use washers.

[joedude]

but if you don't use washers, wouldn't that kill your mid range?

The '01+ bikes have 3 jets, a pilot, mid-main, and a main. The mid-main takes care of the midrange so you don't need to use washers.

Yes, but we're not talking about 2001+ carbs here, Badguy's bike is a 2000... so he will need to use washers 

[Wrecent_Wryder]

hg6

[badguy]

I put my bike back together today with the new jets, two 3mm washers on each needle, the lunchbox, and some sonic springs.  It feels like a different bike...soooo much better!  Even my grandfather couldn't keep from smiling the first time he heard me give it some throttle after I put the lunchbox on

Thanks a lot joedude and Wrecent_Wryder

[crispy5]

I put my bike back together today with the new jets, two 3mm washers on each needle, the lunchbox, and some sonic springs.  It feels like a different bike...soooo much better!  Even my grandfather couldn't keep from smiling the first time he heard me give it some throttle after I put the lunchbox on

Thanks a lot joedude and Wrecent_Wryder

So you put on the lunchbox, 40 pilots and 147.5 mains with the exhaust remaining stock, right?  Sounds like what I want to do.  Any problems since?