engine swap prob!! HELP

[2gendsm98]

hello, im new to the whole 4 cyl thing an not to sure how to do what i am doing. i have a 1998 gs-t with a 1991 2.0l turbo engine. well, the problem is i can start it and it will run for about 7-10 seconds then shut off like someone turned the ingnition off. It does have the 98 computer in it. Do i need to get the computer for the 91?? It does have the wire that goes from the CAS to the camshaft pigtail on the 98 wires. any help would be great! Thanks for your time!

 

[TuRBoTaLooN]

Please provide as much information as you possibly can.....

While it is running for those 7-10 seconds, where are the RPMs?
Does the engine run rough or make any weird noises while running?
Any smoke coming out or anything else unusual?
What modifications do you have?
What are you using to tune? DSMLink? SAFC? None?
Did you put the spark plugs in the correct order?
Did you wire the 1g CAS correctly? As per RRE's instructions?