I have swapped to a 3 bar tune for a 5.3, got 62lb injectors, and the trailblazer intake with a 90mm throttle body. Car ran good with stock tune, swapped it to 3 bar tune, now it runs like the MAF is crapped. The 3bar is set to be as a SD system correct? Is there something that a beginner would have overlooked? Yes I am doing a turbo build, just wanted to get it running clean before adding more headaches.