Dependent on rim width and ET

Original wheel speed sensor can be used

It can be done in less than 10 minutes at the trackside

It requires quite a bit of measuring

IWG75 WRX 08 TD04 Black 5 PSI Aksler Dependent on rim width andSubaru WRX 2008 Internal Wastegate Actuator (IWG) provides better turbo response and greater sensitivity when managing boost pressures. Designed as a direct bolt on replacement for the factory part, the Subaru WRX 2008 Internal Wastegate Actuator (IWG) provides better turbo response and greater sensitivity when managing boost pressures. Designed as a direct bolt on replacement for the factory part, the Subaru WRX 2008 IWG is easy to install and