URD Racing MAF Sensor Calibrator 2005-2006

This is brand new! See photo of purchase date. Installed for quick drive and testing. So, after install I find out that this can't work properly with air pump delete kit. I run JBA LT headers. Throughs a P0113 code. Much longer story but they won't take it back once installed even though they know this is a issue if running air pump delete kit. Would need re tuned for your application. Plus works for other vehicles. 2010 and Newer V6 4Runner/FJ. Full instructions included. $200 S/H included if not haggled about price