I have a 14 sierra with 5.3. I added a Whipple supercharger, Texas speed stage 3 vvt cam with +32% fuel lobe and comps phaser limiter. For most part the truck starts and runs find but i have the P0016 code and also had twice another code for reduced engine power (cant think of the actual error code) but both times happened in my neighborhood while driving constantly and not able to get out of 1st gear. the only other issue is every now and then the rpms drop too fast when letting off the gas and stall, again that is when im not able to get out of 1st gear. i did pull the timing cover just to be sure and everything was good checked the crank and cam sensor so i dont think its mechanical. I've read a bunch of threads regarding the code in similar situations but no luck with the advise given on those threads.
I attached the tune that is currently on the truck, which was not done by me i had another tuner tune this originally but this issue was never fixed. Im not a professional tuner by by any means so if anybody with more knowledge could take a look it and give some advice that would be greatly appreciated!
Thanks!