Done a few kits but only wet NOS brand and never on a Busa.
Not a fan of dry kits.
Jet down low, an extra 15 or 20hp and i'd personaly expect it to
be pretty safe if its done by anyone with their head on straight.
(and you'll get a few more hits going small)
Dont use the plastic lines. Use braided. Plastic lines go brittle
and blow, been there done that !
Most folk mount the bottle wrong. They want it to look "nice".
with or without an internal tube the liquid shoud always be pushed
back and down to an exit point. Most folk set them up that the
liquid "climbs" away on accelleration.
Buy some kitchen scales. Easy to weigh the bottle and get a
good guage of whats left in it / what you've just paid for.
DONT use PTFE plumbers tape on fittings. it'll freeze
and block up your NOS filter.
Im pretty sure you can get a "Busa bracket" that puts a 2lb
bottle under the seat hump. I like the 2.5lb but they are hard
to hide. Less than 2lb is fairly useless unless its just a show pony.
I use a flick switch to turn the horn button into a Nitrous button,
but also use a micro switch on the carb's that only "clicks" at
full throttle.
All this is pretty standard info, like running it up the street with the
system armed but the bottle turned OFF, hit the Nitrous and it
should choke the motor with fuel, that was my standard test to
make sure I wasnt going to get meltdown with just nitrous and no fuel.
Im sure there are a few guys on here who are clue'd up on Busa kits ?