Customizing Latex-Suite is done by defining certain global variables in $VIM/ftplugin/tex/texrc.vim, where $VIM corresponds to ~/.vim for *nix machines and ~/vimfiles for windows machines. This file is not part of the Latex-Suite distribution. You will need to create this file if you need to change any default settinngs. Since this file is not included as part of the Latex-Suite distribution, it will not be over-written in subsequent updates.
It is also possible to define any customization in the $VIM/ftplugin/tex.vim file, but for the sake of clarity, you might want to use the texrc.vim file described above
The default settings in Latex-Suite are defined in $VIM/ftplugin/latex-suite/texrc. Please take a look at this file if you find this documentation incomplete or confusing. That file is also well documented.
This chapter describes the various settings which effect Latex-Suite and their default values. The settings are broken up into sections according to the behavior which they influence.