Which is better for what application? I need a CIK approved silencer that a local karting track wants me to run. I have one like the blue one that is CIK approved and have seen some with three tubes like the red, but I saw the top one and thought it would have better flow. I also know there are different tube diameters for restriction which I would have to guess some classes require. It would be great if someone could put together a quick summary before I make a decision.
The KG is very expensive so a lot of guys also like the straight Freeline and the RLV 4 hole (which you have pictured above). Either way, you loose top end. Unfortunate some tracks, including ours, require the Boxes.