The R&D C2 Monster Compressor Wheel delivers a 2.5 pound per minute airflow gain (approximately 25 horsepower at sea level). The C2 Monster Wheel will work best in sea level to 2000 ft. elevations, or in ambient air temperatures between 90 and 100 plus degrees. For high altitude situations (such as Denver, Colo.) or high heat conditions (above 100 degrees), R&D suggests the C2-C4 range of Monster Wheels. Air density is greatly influenced by heat and altitude combinations. In conditions where the air becomes less dense, power will be lost. R&D offers a range of compressor wheels that will allow the engine tuner to compensate for air density losses with a range of compressor wheels with increased blade tip height and increased inducer sizes, all with increased air flow volumes rated in pounds per minute. Trust the pros at R&D to boost up your airflow volume, after all, its airflow volume gains that increase horsepower. For closed course or endurance racing use using the rotax racing E.C.U. where rpms are between 8250 and 8500, R&D recommends the use of the X model or aftermarket intercooler system. Tests have proven the O.E.M. intercooler to have restrictions at 23.5 pounds of air, or 9.5 pounds of boost at sea level and 60-80 degrees.
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