i got a 2001 lightning,it has a jdm j49 chip in it along with a cool air and boost bypass.when your at wot in second or third it someyimes feels like it spun for a sec or cut out.the rpm goes up then back to normal again.it does this so fast that you almost dont noticed it,thats how quick it does it.other then that it runs fine.any ideas?could it be the torq converter locking up?