Back to stock air box

[The Prophet of Doom]

My 82 550 came from PO with airbox removed, The carb is off a XZ400 and rejetted/fiddled with in some unknown way. 
I was initially pleased with it as it made cool noises  and accellerated like a bat out of hell.  Now I am riding it a bit more, it is driving me nuts - far too touchy for pleasurable and relaxed riding, and keeps bogging down and loosing power at inopportune moments, especially after a period of non-accelleration.  It only goes well flat out.  It's going back to stock.

Here is the question.  As I have only a XZ400 air box (which has no flapper - just a hole) that's what I will have to use, should I use the XZ400 Jetting or the 82 Jetting?  They both use the BD34 Carb.

Main  Jet
107.5/110 (400)  or 122.5/127.5 (82 550)
Pilot Air Jet
145 (400) or 130 (82 550) 

I also have a slightly noisier than stock pipe, and live at sea level
Any opinions?

[h2olawyer]

Since the 400 carbs are BD34s as well, I'd definitely go with the 82 XZ550 jetting.  Jets don't cost much and if it turns out they don't work with the 400 carbs, you're not out much $$.  I noticed that my V with the loud MACs was much quieter when I got the carbs squeaky clean, properly set and synchronized.  Still loud but less obnoxious.

Just my $0.02.

H₂O

[Night Vision]

have you been to XzV2's site?

he has good info on the XZ400 carb settings

http://www.xz550.nl/