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

You can tune your steering geometry either towards positive or negative Ackermann in just a few minutes even at trackside without messing up an alignment

A combination of various parameters is required to maintain consistent trail and self-alignment torque

and Orange Spring (Inner -8 InHg)

This wheel shouldn't be combined with JR3 15x7

JR Wheels JR37 20x10,5 ET40 5x112 Gloss Black Junior's The fresh air valve allowsPCD: 5x112 ET: 40