I HAVE A UNUSED RESISTOR BOX FOR THOSE WANTING TO USE THE DSM INJECTORS . WORKS FINE. DONT BE FOOLED BY THOSE WHO THING THE DSM INJECTORS DONT WORK BECASUE THEY DO YOU JUST HAVE TO FIND THE RIGHT PERSON TO INSTALL THEM LIKE MAINSTREAM PERFORMANCE BUT I'LL LET IT GO FOR $12 CALL OR PM 4042135503