Does anyone know if the early '90's SBECs had internal sensors? I am getting some slight symptoms (and sometimes not so slight) on my 1993 Shadow, 2.5L TBI manual, that would normally be indicative of MAF sensor problem, yet there's no MAF sensor on that car. The SBEC housing is part of the intake air ducting, and has heatsinks that are cooled by pulled-in intake air. I can see how a MAF could be integral to the SBEC, physically. Thanks!