NOT KNOWN FACTS ABOUT ROTARY ENGINE RX7

Early 12A engines also function a thermal reactor, similar to the 0866 10A, plus some use an exhaust port insert to reduce exhaust sounds. A lean-burn off Edition was released in 1979 (in Japan) and 1980 (in the united states) which substituted a more-traditional catalytic converter for this "afterburner". A major modification with the 12A architec