i got a mail order tune and i got my shifts firmed up and now it feels like my tranny is slippin especially when it shifts in 3rd it happened real bad at the track but on the ride home it was fine....i was pissed....has any one heard of this happening

 

Did this happen the minute you put the new tune on or later any other mods? And most importantly since you raised the line pressure is the trans full of fluid to the very top of the crosshatch?

 

it seemed to happen a lil while after i put in the tuned computer i will check the fluid thats a good idea