i have a predator tuner for my 99 z71 anybody know the best shift points rpm for hp tq and any custom tune settings to get more power??

right now theyre 1-2 at 5800 and 2-3 and 3-4 at 5700 but ive never had it dynod so i dunno if the power drops off before then or not it feels right but im up for anybodys opinion thanks