You don't need a flip chip or timimg retard. In fact, unless you spend the cash to have them properly dyno tuned for on and off bottle, I wouldn't chip it.
I would up the injectors to 19# minimum, but if your going to up them, just go for the 24#ers. You will then insure you don't bump into max duty cycle. Ideally you want to peak at about 80% duty cycle. 19# should put you on the money, but with no room for future increses and a potential limit to the HP gain from the VCN. Not that I would advocate exceedeing a 100 HP gain in linear mode .

There is a ton of info in the archives. For some install help, you can see pics at: http://community.webshots.com/user/redlinemotorsport

Look in the Venom Install album.

Mark

Semper Fi "They've got us surrounded. Poor bastards." -Chesty