engine turns off

well my engine has just been turning off on me lately in the last two days it has turned off 4 times while i am driving, taking a turn and decelarating, i have also been hearing some pops coming from my tail pipe and when i hear it my rpms go all the way to zero and then come back again, do you guys have any idea wtf it is?

sounds like your misfiring or your timing is off. I hope its just misfire .
 
I would first check your timing. Look and see if the marks are off by a couple teeth. Then do a simple tune up with spark plugs and wires and see if it improves