INTRO

hi im new to the tuning so i will probably have many questions and might need some help along the way. i have a 04 tahoe that im putting a set of 799 heads with double springs a texas speed shop cam and headers in. how do i know what xdf file i need to do this and what bin files? if i could get help from anyone that would be awesome i will defiantly have picture coming this way here shortly thank you for letting me join im excited

When you download the bin file from your PCM you will be able to see what OS it is. Then search for the matching XDF and you should be off to a good start.