I have a 75 that "some" of the smog equipment was removed, brackets and all; and I have to pass emission testing(Ididn't do the removing). Now I'm trying to figure out what belongs back on. I have the charcoal canister, EGR valve, PCV valve, and all the temp controlled vac switches appear to be present. I also have a factory engineering drawings manual of all things. The confusion occurs on the air injection into the exhaust. The manual shows it going into the pipe below the heat riser, and the parts dealers show it going into the exhaust manifold at the exhaust valves. Who's right, or are both "proper" for emission inspection. Are the brackets for the air pump and vacuum operated heat riser particular to corvette or can I ask the junk yards for other models(I have noticed if you say corvette, the parts cost acquire a whole new meaning).
TIA Jim
TIA Jim
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