So how the post says tomorrow ill be ordering my first np tune, aplication is a
08 sierra regular cab short bed 4.8 cai, lts, no cats true dual x pipe 2 borlas xr1
4/7 drop, on 22s and my main concern is what % of tm I should remove ? Should
I just fill out the form or should I just call np? What r the risks I would run on removing
Tm completly, and am I gonna feel the dif ?

SIERRA1.jpg
SIERRA2.jpg