trans slipping or tune problem?
As i'm accelerating, right before it shifts from 2nd to 3rd....the car jumps up in revs. Literally right before it shifts. And depending on how much throttle I use the amount of rpms that it jumps, changes. For example, when i'm just cruising along it jumps up 200-300rpm suddenly, right before it shifts. If i'm using more throttle it'll jump up 600-800 rpm.
"Any ideas?

