HDI with a cone filter?

[Midnightclub]

If you're only on stage 1 without an intercooler i really wouldn't bother with a cone to be honest, the engine is already sucking in a fair bit of hot air because of the lack of cooler and if you stick a cone in there that isn't enclosed (directly behind the rad too..) your charge temps will be pretty high. If it's entirely for noise, go for it but tbh I didn't think they made much of a difference in terms of noise