Thinking back to my Subaru days, I had a pretty sweet K&N short ram intake that was around $350. It performed well, saved weight, was wrinkle red to match the STI intake manifold, had heat shields, AND a carbon fiber end cap on the exposed filter. Lotus owners are just charged exotic car tax for most aftermarket parts (and the gains usually aren't as good as these other mass produced tuner cars).
Cold Air Intake - High-flow, Aluminum Tube - SUBARU WRX STI H4-2.5L
TYPHOON; SUBARU WRX STI H4-2.5L F/I, 2018-2020
www.knfilters.com