Since BEdita 3.4 it is possibile to use the  CakePHP DebugKit: a debugging toolbar and enhanced debugging tools for CakePHP applications.

Steps to activate:

1. get the forked version of debug_kit via github (1.3 branch only) simply using:  git clone -b 1.3 --single-branch https://github.com/bedita/debug_kit.git bedita-app/plugins/debug_kit   from BEdita core root folder [NOTE: --single-branch option is valid from git version 1.7.10].
2. write $config['debugKit'] = true; in bedita-app/config/bedia.cfg.php  (activate for both backend/frontend) or just in frontend.cfg.php (frontend only)
3. now reload your application, you will see the cake toolbar in the upper right corner

Happy debugging :)

NOTE: to see sql queries in sql_log you should write as usual Configure::write('debug', 2); in config/core.php