Got the turbo going on truck and have a base tune to get it cranked and going. 2013 silverado flex 5.3 ccsb Trick kit, 74/75 precision, 60 lb injectors, flex fuel pump, 7 psi. 3" down pipe into 4" with magnaflow muffler. Questions I have are do I need to turn off cot (no cats) and do I need to turn off flex fuel master enable/ disable. Thanks