red 05f150

2005 supercab xlt 5.4 edge tuner and level kit. My problem is i have my truck tuned to level 2 with .25 timing advance and wot fuel at 1.6. I have beautiful low end power but when i get above 4k she has a constant power not a building power. When it shifts it shifts hard and throws you back in seat and i get power back. And ideas on what causes this and what to do to fix it for power again? Plugs? Fuel filter changed 3k ago. Oil is 5w30. Been told to look at tq converter slipping but not sure what numbers on input versus outputshaft should read. Thankyou.

red 05f150

No ideas?

HulluCorn

I remember reading something on this before... not sure if there was any solution. I would try searching for hard shift.

Kray

I'm starting to come across a lot of posts on edge tuners.. think I want to away from them.