Overwrite title by filters from WP Posts Carousel

function my_wpc_item_title( $title, $params ) {
    $title = '<h4 class="wp-posts-carousel-title">';
            $title .= '<a href="'. $params['post_url'] .'" title="'. $params['post']->post_title .'">'. $params['post']->post_title .'</a>';
    $title .= '</h4>';

    return $title;
}
add_filter('wpc_item_title', 'my_wpc_item_title', 1, 2);