If you are going emission delete........you basically block EVERYTHING except for a select few.
-Leave the large port on the backside of the TB for the Oil Injector Vacuum spider (unless you are pre-mixing, then cap it)
-Leave the large port for the brake booster
-Leave the port on the turbo side of the UIM (pictured above) for boost reference
-Leave the port for the Fuel Pressure regulator.
Everything else is capped off.
That is really all you should have if you are emission free.
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1976 Mazda Cosmo RX-5
1976 Mazda Cosmo RX-5
2003 Toyota Tundra TRD
2015 Toyota 4Runner SR5
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