HELP 94 Chrysler LHS stalling?

Ok so I have done the following to it
Added a Cold Air Intake
New Fuel Filter
New Spark Plugs
A Oil Change
A Performance chip added onto the IAT/MAF wire sensor
And Im still Stalling and i dont know why
So I will give u the symptoms
Rough Idling
Random Stalling
Check engine light will come one before it stalls and right before Check engine light comes on the Rpms drop bellow 1k then it will pick back up then it will stall
Car then stalls wont start for 2-5 mins but then starts and Check Engine light goes away
Rough shifting
was told by a Mech Transmission is FINE
Any ideal on this?
No loud noises in engine or no transmission whining
Was told Cat Converter is getting clogged and I have a 2nd California emissions muffler on there THAT IS HUGE(getting it cut off tomorrow i live in WV :)
Someone help me
Oh also Fuel pump does turn on when i turn the key i can hear it :)
 
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