I made 2 passes before spraying that day and on the 3rd I decided to spray a 150. I have sprayed it before and the AFR is in the 11.6-11.8 range but this time as soon as I shifted into 2nd it popped and the pedal went dead. I coasted to the traps and shut off the key and on again and it cranked up and ran fine. I noticed it blew a big hole in my stock bellow so I loaded a speed density tune and made 2 more passes and got a new best on all motor. I want to know what went wrong so this never happens again, I honestly think I didnt have the bottle turned on and fuel puddled or it just got too rich. I have a remote bottle opener and I think in nervousness I got confused and flipped the switch the wrong way. There was nitrous in the line from messing with the purge switch before even getting to the staging lanes. Here's a vid of the run along with an HP tuner log.
http://www.youtube.com/watch?v=ir_TI4dZk_w&feature=user

 

If the bottle wasnt on the it just fat popped. You need to just make sure the bottle is on next time. You probly need a new mass air sensor too. Also check for cracks in the intake.

 

Yeah, I was figuring the MAF to be fried, thank you for the help. I feel a little better now.

 

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Man, to bad you had that problem, you got out of the hole realy fast! Ive done it similar to what has happend to you but not quite as bad. I hit the nitrous without the bottle on and my car started backfiring and blowing clouds of black smoke. It did not do any damage though.

 

Normally if the bottle is not on the car will just nose over and bog from going to rich.
How did it feel before the pop.

All the black smoke out of the tail pipe is a sign of unburnt fuel. So your theory is very possible.
Dave

 

I know, I think 10's might have been a reality had I not goofed, I went 11.8 on motor with the busted bellow after the backfire.

 

Thanks Dave, your input means alot. There was Nitrous in the line before the run from the pit area, then I turned off the bottle and didnt clear the line. It felt awesome in first but the second I shifted into second gear it popped 3 times real quick and then the pedal went dead like it was flooded but just as I passed the traps I shut the key off and on again and it cranked and ran like a champ.