Yeah, it's definitely noisy and not the best sound. Any engine will have a noisy intake if there's no air box to silence it a bit. I hear it mostly at low speeds and heavy throttle. Adding a louder exhaust helps! haha
1st time i heard that when i installed a ramair on my 14 Roadster, i nearly cracked a fat!!!...That is the sound of power being developed right under your butt!.....YEAH!!!
A Brisbane forum member @ozrider makes them.
Cost Au$450 +post last time he posted earlier this year, along with his new 2" snake header exhaust system.