The Mazda RX8 is rated at 238 HP in the 6-speed version from factory with untapped power potential. K&N  Air Filters discovered designing a short-ram-style intake system for the rotary in-take it made an average 10 + HP increase in additional HP at the drive wheels.

Performance enthusiasts will be blown away by this Typhoon's looks as well as its performance. For starters, the system's intake tube is made of free-flowing, mandrel-bent 6061 aluminum. The system's billet aluminum mass-air sensor adapter is fully TIG welded to the intake tube prior to finishing.

Part 69-6030-1TFK Product Specifications
Product Style: 69 Series Typhoon Kits
Estimated Horsepower Gain: 11.15 HP @ 8660 RPM
Replacement Filter: RU-5123
Street Legal In All US States: See Application Link Below
TUV Approved (Europe): No
Clamp Style: Mini
System Type: Cold-Air Intake System
Intake Pipe Color / Finish: Flat Black
Weight: 7.8 lb (3.5 kg)
Product Box Length: 18.25 in (464 mm)
Product Box Width: 14.5 in (368 mm)
Product Box Height: 8.5 in (216 mm)

K&N 69-6030-1TFK fits the following:
2011 MAZDA RX-8 1.3L R2 F/I - All
2010 MAZDA RX-8 1.3L R2 F/I - All
2009 MAZDA RX-8 1.3L R2 F/I - All
2008 MAZDA RX-8 1.3L R2 F/I - All
2007 MAZDA RX-8 1.3L R2 F/I - All
2006 MAZDA RX-8 1.3L R2 F/I - All
2005 MAZDA RX-8 1.3L R2 F/I - All
2004 MAZDA RX-8 1.3L R2 F/I - All
2003 MAZDA RX-8 1.3L R2 F/I - All

Other features that set Typhoon® systems apart include high-temperature, multi-ply DuPont® Nomex®-reinforced silicone hose couplings with stainless-steel barrel clamps. Mounting brackets are powdercoated black, and all hardware is stainless. No-drill installation simply involves replacing the OE airbox and intake tract.