Originally Posted by DrunkenDragon
my car does the same deal...
i dont know if it is slippin or what.
i have a fairly new ACT clutch and just did an EJ22T engine swap
it only happens in 1st and second gear.. when at a complete stop and i start to go foward... the car seems to bog out.. until i hit around 2500 to 3000 rpms it picks up speed...
but when at a complete stap again and if i rev the car higher at 3000 rpm and slowly release the clutch pedal. the car moves foward fine.
I had the same problem in a 90 legacy that i just bought. It did it because one of the front axles had eaten itself and was in two pieces so as the other guy said, takes a while for the viscous coupling in the diff to react so for a second or two it feels way underpowered. I would also suggest checking the axles both front and rear.
Replaced the axle and the car is back to normal power again.