Do you need the EGR valve in 85 fiero gt?

Yes, the EGR valve is necessary for the proper functioning of the engine in the 1985 Fiero GT. The EGR valve helps reduce emissions by recirculating a small amount of exhaust gas back into the engine, which lowers combustion temperatures and reduces the formation of nitrogen oxides (NOx). Without a functional EGR valve, the engine will run less efficiently and produce more emissions.