If you've beefed up your ignition system, don't hesitate to replace it.
Since the AS Votani was reinforced with Coil, I thought it would generate stronger sparks, so I replaced it. Actually, before and after the replacement, the engine performance was improved a little bit. As for the running performance, I did not notice any change. I highly recommend Carburetor Vehicles as well, if you are changing the ignition system. Now I just need them to work a little harder on durability and Cost!