Just wanting to get a good base tune in my car prior to Dyno tuning it. I have made a couple changes in the tune already but really need some more expert knowledge on a couple things. I am working on my 2017 Chevy SS sedan with the LS3 and a 6m trans. Installed long tube headers and catless mids. I am adding a VCM intake in a few days as well. Turned of codes to rear O2 sensors and brought in PE sooner. I am not sure where to go from hear. I know timing is a good power adder in these but how much and where? Also leaning out the fueling at wot after about 4-4500 rpms is good but again how much? Any help would be appreciated.