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b15 · 01-31-2014, 05:05 PM

Resonated FI still drone but it is reduced. However, drone, like over sound, is subjective. The reason why HKS and the ARK Grip minimize almost all drone is due to having traditional resonators + Helmholtz resonators. The 18" resonated FI will reduce the drone vs the non-resonated version, but it is still present as you modulate the throttle at cruising speed....to me. To many others on this board they consider it drone free. Again subjective.

01-31-2014, 05:05 PM	#33 (permalink)
b15 A True Z Fanatic Join Date: Feb 2010 Location: Chicago Posts: 3,229 Drives: 4drz Rep Power: 36572	Resonated FI still drone but it is reduced. However, drone, like over sound, is subjective. The reason why HKS and the ARK Grip minimize almost all drone is due to having traditional resonators + Helmholtz resonators. The 18" resonated FI will reduce the drone vs the non-resonated version, but it is still present as you modulate the throttle at cruising speed....to me. To many others on this board they consider it drone free. Again subjective. Last edited by b15; 01-31-2014 at 05:07 PM.