The fresh air valve allows for incoming charged fresh air from the turbo to be diverted safely into the exhaust manifold pre-turbine wheel with the throttle at low opening angles to allow for safer spooling of the turbocharger without the potentially damaging throttle based late combustion event style anti-lag that can induce high engine stresses and break connecting rods

Xtreme Performance upgrade kits are available with everything you need for a successful installation + accessories you may want to upgrade or replace while the gearbox is out of the vehicle

Requires S14 hubs

Type 5 Supersonic BOV

Nissan S-chassis bearing/hub or Lexus IS (XE20) bearing/hub

Clutch Kit - Xtreme Performance Rigid Ceramic Single Plate Incl Flywheel KGM28591-1E Feal suspension The fresh air valve allows