I added fuel and timing
Worked with the MAF
Take a look and please give me your thoughts and suggestions
It feels very good after about 2500 rpm and the STFT go to 0, but before that its just not acting right.
Also on the 4-5 shift i get an increase of about 300 RPM before the shift goes in. I added some line pressure becasue before it was about 2000 RPM before the shift goes in.
Truck is stock 2009 Sierra 5.3L
other than an air aid intake tube and a magnaflow
Long tubes in about 2 weeks and an LS6 cam in about a month.