Why not different sized jets for cobra pipes?

[Cinco]

Did some searching, and found that with the cobra 6 to 6 pipes, the only problem with jetting is that the pipes are different lengths, and jetting does not really match what is needed.  Why not vary the jetting, to match the pipes?  I have jetted numerous inline 4 engines, and have varied the jets based on inside/outside or exhaust routings.  Unfortunatly for me I don't have a big assortment of jets to try out, unless they might be the same as the ones for my kaws, but most of the ones I have would probably be much larger anyway.  Maybe I'll start gathering an assortment now.....  Has anyone tried staggering jets?

[98valk]

unless u let in more air, no need for more fuel.

http://www.valkyrieforum.com/forum/tech_archive.cgi?read=969520

This was posted by J. Orr, 3/27/1998, on the GWRRA BBS, valkyrie section.
The following mods were done by Marc the owner of Factory Pro of a valkyrie that had cobra 6x6 pipes.
K&N filter (w/o prefilter)
Air box mod (remove plastic welded baffle)
38 pilot jet
3.5 turns idle mixture screw
front needles set on #3
mid and rear needles set on #2
115 main jets all carbs
this picked up 5 hp over the base run with the cobras.

this HP is still down from the stock pipes or almost the same.

[Slammer]

the last 7 or 8 years. I always put the stock needles and springs back in  first thing. Always set the pilots at 2.25 turns out. They run good and get decent mileage.