Set default to empty result with views exposed filters
You can use a views preprocessor to achieve this. The 'empty' element behaves similarly to the "No Results Behavior" option in the Views UI. Place this code in template.php and clear the cache:

function mytheme_preprocess_views_view(&amp;$vars) {
  if ($vars['view']-&gt;name == 'my_view_name') {
    if (empty($vars['view']-&gt;exposed_input)) {
      $vars['rows'] = array();
      $vars['empty'] = '';
    }
  }
}


Tested using Views 7.x-3.0-rc1.