i got a problem with my bonneville ya start it up abd it sputters and misses evern if u let it sit it does it but if you let it miss and drive it it comes out of it in bout 2 minutes and i have no throttel response at all ya hit the gas and it wants to die its a 1990 bonneville nothing speical bone stock 3800 i replaced the ingition modugal and coil pack and the computer but it still does it if anyone can help me id be thankful
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1990 bonneville painted mean teal
(PPG paint) 2 boss 800w 12' 1200w boss
amp, custom cold air intake,tinted windows, custom wheels

have you also done the cheaper and easier things like check and/or replace your spark plugs and spark plug wires?

Two things could also be possibilities:

Vacuum leak
Weak MAF sensor

Spark plugs, clean IAC, wires, fuel injector cleaner in tank and see where you are.
start with the basics.

i have gave it a complete tune up and replaced the iac maf and crank sensor and it still does it