I know you don't want to spend the $420 for the tune. When you finally do you will wonder why you waited so long. And you must get the TCM tune as well.
Set the Accessport to read desired boost, boost, MAP, TIP, and you can also set for wastegate position.
Also maybe pull and clean your MAP and TIP sensors.
Set the Accessport to read desired boost, boost, MAP, TIP, and you can also set for wastegate position.
Also maybe pull and clean your MAP and TIP sensors.