Engine Miss!?!?!?

Gotta a 91 Buick Le Sabre wit 3800 V6. It has more than 200,000 miles on it but maintained very well. What i have is a miss wit the engine but only when the throttle is fully opened from idle. It is real sluggish when it is opened promptly. But if done smoothly, its fine. Spark plugs and wires are all good. The only thing i can think of is the ignition module. It acts as if normal rev up its fine. But when throttle is opened fully real fast, the load to one or more spark plug(s) is lost. Like i said spark plugs and wires are good. There is no timing because the ignition module is the brain for the timing. Any suggestions??? Thanx!!