A precision-tuned, high-quality carburetor has to handle the challenges of daily driving while yielding consistent, reliable street performance on a daily basis. Several features make our carburetors excellent street performers. First, they use metering rods for the transition between circuits. This means they are not affected by engine backfires, so there are no power valves to blow out, and the rods can be switched out in seconds without removing the carburetor or draining the fuel. Second, they are uniquely able to "hold a tune", so that once tuned, they stay tuned. For you, the performance compared to other carburetors stays consistent, and the calibration does not change. The lightweight, all-aluminum body is designed with a two-piece body capable of resisting warp and compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats help create a carburetor that is easy to tune, reliable, and user-friendly for many miles of problem-free operation.