XSS过滤不会在post codeigniter上禁用

I'm in the process of developing a basic WYSIWYG for my site and I've used this line to turn XSS filtering off

$this->input->post(NULL, FALSE); 

I have also tried

$this->input->post(); 

as I understand it, this should give me all postdata and not filter it, however, it appears to still be removing my <script> tags. Disregarding security concerns for now (I'll handle those still) how can I guarantee that my scripts are not removed without disabling XSS for my entire site?

P.S. I have also verified that $config['global_xss_filtering'] is set to false.

Per the CI documentation, if you're looking to pull the whole post array without XSS, you should replace $this->input->post(NULL, FALSE); with $this->input->post();

See http://codeigniter.com/user_guide/libraries/input.html