You have both a MAP and MAT/IAT sensor. The Map sensor should be located on the passenger side of the firewall (by the AC). It should have a black, light green and gray wire going to it. That is where mine is located and I have a 92 RS as well. The MAT (IAT on newer models) is located in the stock air cleaner and it should have a tan and a black wire going to it.. This sensor measures the air temp going into the TBI.
Here is a link to a a vendor for the MAP sensor.
http://www.autozone.com/servlet/UiBr...EM.A.P.+SENSOR
Just copy and past it.
Phil
Sorry forgot to add that only MPFI V6 and TPI V8 models use the MAF sensor.