well i have a custom converter which stalls at 2,500 i dunno which brand it is but the problem im having is when i floor the car and it shifts to second the car feels slugish. it shifts to second and the rpms climb slowly from 4 then when it hits 5,000 rpms it pulls hard. but why would the rpms climb slowly while at 4,000 rpms?? this only happens on second gear and only when i floor it thanks for your imput