Just recently put in a Circle D 258mm Triple 3200 Stall verter in my truck. Ill add truck specs below , but ive never tuned a converter and already and skeptical on proper trans tuning haha.
2009 Sierra Denali
Crew cab bout 5500 lbs
6.2 L92
Magnasun TVS1900 8PSI for now
3.42s
6L80e
I have hptuners , do alot of tuning , just never had to do a stall before.

