You might want to go with upgraded injectors (RC Eng. or something) just to be on the safe side.
To be honest with you, I don't really know much about LS/VTEC because most people have eliminated it from a reliable, cost effective, means of making power. Ever since turbo kits came out anyway, you know?
In any case, search around a bit in honda-acura.net, there's been tons and tons of ls/vtec posts in the integra forum over the years.