First of all, I know all you chevy truck guys use nelson tune, but i wanted to know if anyone had a predator programmer before, for their 99 to 02 5300 silverado? i'm looking for custom tuning perameters like rich/lean, trans line pressure, and rpm shift points...so if anyone can help me out that would be great and as far as nelson tune, will be the last item on my list of performance items.....major stuff will be done!!!


2002 ecsb 5300 auto 3:73 posi
Volant air intake with scoop
pulleys
predator programmer
GMS mass airflow
MSD 8.5 wires w/ plugs
Corsa Exh

Future mods
Cam with 1:8 roller rockers
Dyna tech header system
2 4 drop
silverado ss wheel chrome
Nelson tune
cooling fan kit

 

when you go to tweak the settings you have to tweak them then basically go ride for a little while to see if you get KR and try and keep the ltrms to zero at wot. i can't remember exactly where mine were set at because i have had a custom tune with that thing for so long and it shows up as zero when you get that done. don't go over board on the line pressure and shift speed. it will make your tranny clunk even at low speeds. that gets very annoying after a while.

 

I use the predator on my 2000 5.3. I had my powerdyne tuned by RWTD and the optimized shift points were 38, 78, 118 at WOT, shift rpms were all at 5980 but the stall drops the rpm by at least 2000 before shifting. Shift pressure was increased 15% and shift time was dropped 25%. Hope this helps