POP-BOOM ..black smoke on my tailpipe..need help

[1ponybeast]

HEY guys .....I have a 95 altima 5speed....just recently add a cold air intake, and today just converted MAF to second generation MAF(better airflow restriction-supposedly)...as I was checking the acceleration-HI RPM, I heared a POP/BOOM ....loud enough to hear over the loud revving. ..and I start seing a smoke coming off my tailpipe, not black, but it leaves the black stuff in the pipe..........could you please tell me what I did, what I broke, and need to do to fix it?thx.. pls help

[thrwbck77]

sounds like a back fire to me some times that happens to me wheni hi rev

[1ponybeast]

well, the thing is it never happend before.....and i never had those black stuff in tailpipe......read some thread about the smoke from tailpipe, supposedly caused by intake gasket leak or in intake vacuum leak..... ....but thank you....

DOES ANYONE KNOWS HOW TO CHECK IF THE MENTIONED CAUSED OF THE PROBLEM IS RIGHT?