Straight from Edelbrock:
PERFORMER RPM™ MANIFOLDS (1500 to 6500 rpm)
Performer RPMs are dual-plane, high-rise intakes with 180° firing order to produce incredible top-end horsepower while retaining good throttle response. Their larger plenums and runners match the free-flowing exhaust, high-lift cams and other modifications of a high output engine. They are intended for high-performance street or competition engines that run up to 6500 rpm. They are not for emissions equipped engines. Edelbrock's Performer RPM gives you the ultimate in street high-performance.
TORKER II® MANIFOLDS (2500 to 6500 rpm)
These single-plane, low-rise intakes work well for high-rpm, high-performance street applications. Ideal for applications where hood clearance is limited, they produce gains in top-end horsepower with adequate throttle response. Not intended for mileage or emissions applications, they are only for high-performance vehicles.
Notice the difference in verbage concerning throttle response:
RPM: good throttle response.
TORQUER: adequate throttle response.
This probably won't carry much weight, but on every DynoSim I've run, the RPM/Weiand Stealth makes more hp and torque from 2000 through 6000 than any other design. Above 6000, the single plane takes over.
PERFORMER RPM™ MANIFOLDS (1500 to 6500 rpm)
Performer RPMs are dual-plane, high-rise intakes with 180° firing order to produce incredible top-end horsepower while retaining good throttle response. Their larger plenums and runners match the free-flowing exhaust, high-lift cams and other modifications of a high output engine. They are intended for high-performance street or competition engines that run up to 6500 rpm. They are not for emissions equipped engines. Edelbrock's Performer RPM gives you the ultimate in street high-performance.
TORKER II® MANIFOLDS (2500 to 6500 rpm)
These single-plane, low-rise intakes work well for high-rpm, high-performance street applications. Ideal for applications where hood clearance is limited, they produce gains in top-end horsepower with adequate throttle response. Not intended for mileage or emissions applications, they are only for high-performance vehicles.
Notice the difference in verbage concerning throttle response:
RPM: good throttle response.
TORQUER: adequate throttle response.
This probably won't carry much weight, but on every DynoSim I've run, the RPM/Weiand Stealth makes more hp and torque from 2000 through 6000 than any other design. Above 6000, the single plane takes over.