I didn't answer when you posted this in the hope that someone with first hand experience would reply, but FWIW, I know someone who did use the WR system and they weren't impressed, especially for the price. I don't think they felt there was any benefit.Has anyone ever put in a Weapon R Air Intake system in there 2.4l (KA24DE) engine before?
In another FWIW, I just did the air box delete on mine and noticed no change with that. I didn't expect any power change, but thought maybe I'd see a change in MPG. If it did anything, I haven't noticed. I'm still glad I did it though even on the off chance the engine can breathe any easier.