Ya know, i was reading somewhere about torque converter probs. My car feels like it lunges and revs when i slow down....if my torque converter (something i know nothing about) isn't locking up, or is always locking up, or is cycling, would it hurt my 1/4 mile times? Would one of those b&m torque converter controllers fix that? Do i wanna run with it locked or unlocked?

If it's cycling (or messing up or whatever) now and i'm running 15.5, how much do i stand to drop off that time? I keep getting told i should be in the low 13's.
Thanks...