This has likely been asked and answered in different threads already but I could not ind my problem specifically...but here is my situation. Had an MBRP 4 inch turbo back exhaust installed today, and I installed my Edge Race Evolution CTS. (I have an 08 LMM). My CEL is on, and the CTS tells me its high volotage readings (from the factory sensors I can only assume) that are no longer in the exhaust, as I did a DPF delete with the MBRP. So no CAT no DPF. The Edge tuner has not prompted me to tell it to "delete the PDF" in the programmer, and the guys at Edge told me it would yesterday before I installed the unit. Should it prompt me for this, or am i messing something up by not using the CTS correctly? I only have it programmed for "stock" mode right now, and have not yet selected a race level tune. I also installed an expandable EGT sensor set up form Edge as well, and the unit has not recognized the sensor yet. Any help is greatly appreciated. Thanks!