Rejet Xj650 maxim-NEED HELP

Hi, I'm working on my first Xj650
I'm only going for 4-1 exhaust and keep the Stock air box and air filter
Arcording to this guide
MAIN FUEL JET SIZE CHANGES NEEDED PER TYPICAL MODIFICATION:


Typical Exhaust Changes:

+2 main fuel jet size for custom 4-into-2 exhaust

or

+4 main fuel jet sizes for 4-into-1 exhaust

or

+4 main jet sizes for no muffler (open headers)


Typical Intake Changes:

+2 main fuel jet sizes for single K&N filter (inside a stock airbox)

or

+2 main fuel jet size for drilling holes in the airbox with stock filter

or

+4 main fuel jet sizes for individual pod filters (no airbox)


Additional changes:

- Add up all the main fuel jet size increases and subtract 2 sizes.

- Decrease main fuel jet size by 2 sizes per every 2000' above sea level.

- Under a mis-match condition, such as when using pod filters with a 100% stock exhaust, or 4-into-1 header with stock filter and air box, then subtract 2 main fuel jet sizes.

My setting should be +4 (4-1 exhaust) - 2 (formular)= +2 for main jet
should I do another -2 for the mis-match condition?
Thanks a lot.

 

So what would be a 4-1 with stock airbox but aftermarket filter? Would it be +6? That seems like quite a lot to go up.

and what would a 4-1 with pod filters be? (Don't the XJ's not work very well with pod filters?)