[Captain drift]

Hello All,

I am nearly there sorting out the wiring in my car, and I thought while it is apart, then should I wire in my HKS knock amp?
I am running the HKS IS Ecu, so this should plug straight in.
What is the benefit if using this?
The one I have is

http://image.superstreetonline.com/f/9021257+w750+st0/130_0707_20_z+engine_upgrade+hks_knock_amp.jpg