The black inlet is flimsy garbage. I tested both extensively, and while it doesn't pull in engine room air once the car is moving over 10km/h, it dumps ambient air into the engine room vs. putting it in the air box. The GRMN one lowers intake temps across the board when the car is moving forward because a lot more air is entering the box via the upper duct, so pulling less in through the lower duct. Actually data logged inlet pressure at the box with a magnehelic gauge, and the difference is substantial, even the open red inlet pipe vs. a completely tape-sealed black pipe.
While I didn't run it on the dyno...and dyno testing air intakes is pointless without road-speed air on the front of the car...the top-end bump is real. Like that loss of power once you pass 6,000rpm is gone and the car pulls all the way out to 7,000.
It's also made of much better material and more robust.
It's ¥33,000 here in Japan after tax, where the black one is like ¥3,500 (X10) and Whif wants what looks like £295 before VAT, which is almost double that. But, freight from Japan to the UK for a single piece is likely ¥7,000, so ¥40,000 or £189. Add whatever import tax the UK levies, and what Whif is charging becomes pretty fair and not an unreasonable markup.
I'll say this and try to stay out of trouble. Look at the factory Super Taikyu GR Yaris, you'll see it's running the factory air box. Look at the resent LeMans GR Yaris entries, and you'll see they're running the factory air box. Look at the test mule where they put the g20e in the rear...and it's running a factory GR Yaris air box

(I've seen it up close). Weird that Toyota would leave those big airbox gains (claimed) on the table.