HKS Air Fuel Knock Amp AFK Wideband Controller New Arrivals you've noticed a curved "bellmouth"

you've noticed a curved "bellmouth" profile at the inlet of each intake runner

LED daytime running lights integrated into grille assembly

Compatible with N54 twin-turbo engines only – not compatible with N55 single-turbo

【Reasonable Use of Space】Use the space below the air outlet of the original car's rear air conditioner to store items

This cover mounts at factory rocker points—no drilling required

HKS Air Fuel Knock Amp AFK Wideband Controller New Arrivals you've noticed a curved "bellmouth"HKS 44006 AK003 Air Fuel Knock Amp AFK Wideband Controller Redesigned for 2008, the all new generation of the A F Knock Amp, known as the AFK, now includes a new HKS AF sensor where the air fuel ratio can be monitored accurately on the display. The AFK can now monitor and display dual A F readings with the purchase of an additional AF sensor. The redesign of the new AFK features a sleek black case with a clear acrylic faceplate and a positive lit LCD