We have designed our own EGR block off kit for the Spec MX-5 and other NC (2006-2015) Miatas that want to delete the EGR system.
Our kit comes complete with 2 plates and 1 plug. We also have a water pipe kit that replaces the water pipes with ones that no longer have the hose attachement points that no longer exists.
The basic kit weighs only 3.7oz and includes the following:
(1) Plug
(1) Block off plate - Intake side.
(1) Block off plate - Cylinder head side.
(2) Flanged head bolts for Cylinder head side plate. The factory bolts are too long.