yii changing removing and renameing column names

I currently have a return that sends back a list of items in an auction. What I am trying to do is clean up the array before I export it to a excel spread sheet. I can use yii or php to clean up the select before exporting, I just need to know how to do it. I know how to do it with a mysql statement but that is frowned upon in the yii world.

This is my current code:

$auction = Btmauctions::model()->findByPk($id);
$listings = $auction->btmListings;
$filename = 'last_lot_export.csv';
$csv = new ECSVExport($listings);
$csv->toCSV($filename); // returns string by default
Yii::app()->getRequest()->sendFile( $auction->name.'_lots.csv' , file_get_contents( $filename ) ); 

This exports a csv that looks like this:

ID  auction_ID  lot description manufacturer  model more_info   condition
21  10  12  FANUC CIRCUIT BOARD Fanuc   A20B-9000-0180/09C      3
20  10  1   FANUC CIRCUIT BOARD Fanuc   A20B-0008-0242/023A     4
22  10  18  FANUC CIRCUT BOARD  Fanuc   A20B-1003-0010/12B  * A LITTLE DIRTY    3
23  10  19  FANUC CIRCUIT BOARD Fanuc   A20B-1003-0020/03A  *VERY DIRTY!!! *PLASTIC BROKEN ON RISERS!! COSMETIC ONLY!!  3

What I need to do is clean up the cvs automatically before exporting it so it looks like this:

lot INFO    manufacturer    model   more info   condition
12  FANUC   CIRCUIT BOARD   Fanuc   A20B-9000-0180/09C      3
1   FANUC   CIRCUIT BOARD   Fanuc   A20B-0008-0242/023A     4
18  FANUC   CIRCUT BOARD    Fanuc   A20B-1003-0010/12B  * A LITTLE DIRTY    3
19  FANUC   CIRCUIT BOARD   Fanuc   A20B-1003-0020/03A  *VERY DIRTY!!!