a single body passage carburetor main body design that offers improved control of the fuel delivery on both the opposing and opposite sides of the carburetors single venturi , this to offer true quadrant tuning of all aspects of fuel delivery in the designs single passage opening . the carburetor main body design may incorporate , a throttle plate , a main body assembly , boosters that are associated with a main fuel delivery circuit , idle fuel delivery passages , transfer circuit delivery passages , air venting passages , bowl venting passages and accelerator pump passages . each can be constructed to offer the design the capability of individually controlling the fuel delivery of both the main , the idle and the transfer circuits to each quadrant of the single venturi design . this is something that previous designs have not offered . by incorporating a modular metering design in conjunction with the multiple fuel port outlets , this design allows improved control of the delivery of fuel over previous artwork in the single body passage designs . a vast improvement over previous artwork and these abilities are a requirement for proper fuel delivery in high horsepower engines to avoid engine damage , maximize power output and improve fuel efficiency .