Yea I was just kidding about beating the Banshee but I know that any carburetor would be better than a CV carburetor as far as performance goes. A CV carburetor’s slide opens on vacuum and I am looking for someone that has done the upgrade of installing a flat or round slide carb on the z400. Thanks for the input guys but I need someone who has done this upgrade for a little direction in the matter. Thanks again. Peace.