Chances are you'll just make the engine run worse with that setup. Larger intake components are dicy. You can reduce restrictions to the stock components to help it breathe a little better, but there is a point where the progress is negative. N/A really relies on intake velocity to provide enough mixing of the atomized fuel charge and the incoming air for efficient combustion. As you may or may not know, for a given air volume moving from point A to point B, the larger area it has to flow through, the slower it will have to move for that volume of air to reach the end point in the given time. If you blow through a cardboard tube, you can barely feel the air coming out the other end. If you blow through a straw, you can move a paperclip across the table with the air jet. That veolcity acts within the combustion chamber to get that atomized fuel as evenly mixed as possible for a complete and instantaneous combustion. If it is a spotty mix, the burn will be slower, and thus the power generated will be less.
Sorry for the science lesson, but it is necessary to understand what is happenning before going and modifying things. A larger TB might help out near redline as the amount of air required by the engine is at its peak. Everywhere else however, you'll kill the powerband. There are actually a ton of tuners out there who REDUCE the intake runner area to increase flow velocity within their desired power band. The best engine is one where all the parts work well with each other...not necessarily the one that has the largest this and the largest that.
Put your stock TB back on.
