This spacer prevents the premature failure of the plastic components downstream of the turbochargers for the 4.0tfsi engine.
(WILL NOT WORK WITH SRM INLETS WITH METH INJECTION ON THROTTLE BODY SAPCER)
(SRM INLETS WILL WORK WITH 4.0 METH KIT) https://sillyrabbitmotorsport.com/4-0t-methanol-injection-kit.html