when swapping heads, what do you do with the thermactor( air injecton exhaust emission control). the thing that the air pump pumps air into the bakc of the heads into the exhuast port. the new heads have no port for it. does anyone know what to do.
if there are no emissions in your area i'd take the whole system off. im sure you cant do that if you live in Cali. im in the chicago land area, i have to keep all the emissions on my car, so i went with the trickflow TW heads.