This forum is always talked about on gmfs and customgm so i figured id come check it out and learn some performance stuff. I have a 2013 gmc ccsb 4x4 6.2, only thing performance wise is a efi live tune from a local racing shop (leathal racing for anyone in the Lafayette area) and a single straight for exhaust. Also have a 7" showoff lift with 33" toyo mt's and 22x12 chrome gear alloy 726's.


Does tapatalk have this site or is it just computer?