East Coast Supercharging ECS Paxton SC1500 C6 Supercharger Kit - Manual (Page 29)

Restrictor Plate Installation
Your ECS kit is supplied with an air flow restrictor plate to regulate overall boost. This restrictor plate
is strongly recommended on most stock applications.
Place restrictor plate inside of air filter, as pictured above, and let it rest inside the built-in groove of
the air filter.
Next, attach the plastic inlet tube to the air filter and restrictor assembly, as shown below. Secure
using the four self-tapping screws and the 4” worm clamp to the air filter side of the plastic inlet. Set
assembly aside for later install.