99 Grand Prix GT Surging Problem

This is more for anyones information that myself seeings how i posted the first message. I have been reading everything i could find about this surging problem, from tourque converters to spark plug wires etc. I dont know how it could be a tourque converter, because it would show signs elsewhere. As far as the ingnition side goes. I did a full tune up approx 20,000 miles ago, and put MSD coils about 5,000 miles ago. So with bosch platinum 4 plugs the coils and all new O2 sensors the weakest point would be the wires and tonight i am going to check if they are arching. However with all that in mind I also have a intake on my car, which used to be cold air, but i changed it to a short ram. I am not sure if messing with it caused any problems, but maybe. I also went to advanced auto parts and used a code reader, and my car is throwing absolutely no codes at all. So what i did was completely disconnected the battery from the car and waited approximately a half an hour. Then before i connected it again i touched the pos and neg cables together to remove and charge and reconnected it. So far after two days of driving I have not had it reoccour. Maybe it was reading a bad mix on air/fuel, i am not sure, but I would try this first before reverting to a new tourque converter or doing a complete tune up on a car that hasn't gone at least 80,000 miles yet. The new car coil pack inginition systems last a heck of a lot longer than the old rotor, cap, distributor setups.

Forgot to add a couple things. Along with the full tune up at 80,000 miles that also meant i changed the fuel filter and at 100,000 miles i replaced the trans axle filter and fluid. When i examined the manget in the transmission pan it was in perfect condition. Just fine metal dust that is normal from a tourque converter. I also installed a new PCV valve then too. My car has 108,000 miles on it now.