Unless there's something mechanicly wrong with the pump, it should be plenty...checking the floats would be a good idea...your secondaries working correctly? What power valve in the rear? My gut thinks a weak pump would show up farther down-track than in 2nd, but I'm sure Eric will correct me...
I tried a high flow pump from Carter a couple years ago in place of our stock AC...the A-B-A testing showed absolutely *no change* when swapping pumps...I may be jinxing myself here, but our 3700+ pound Camaro will trap anywhere from 117-118mph on our *non-sexy" stock pump.