Hesitation, Bogging, Bucking

[PeTr0]

My car sputters back and forth when i hit the gas. If i take my foot off the gas after about a second it kicks back. Also when i am sitting at idle the monster tach jumps around a couple of hundred rpm..is that normal. The exhaust note sounds a little funny too. What is wrong with my car guys. Dealer said they didnt notice a problem...how could that be...

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Red 1993 Gt- flowmasters,BBK Shortie Headers, BBK Hi-Flow H-Pipe, BBK cold air induction w/K&N, Pro 5.0 shifer, 130 amp alt., underdrives,pioneer cd player and kicker component speakers, Kenwood Excelon amp, 2 12" subs in the hatch,firehawk sz50 all around, timing bumped to 13 deg., ADS Superchip, and mobil 1 oil lubing the 302.