Just received the Megan racing exhaust manifold. Should the two bolts that plug the anti lag ports be tightened real tight? Also same for o2 housing port.

 

unless u want them falling off

 

Leave them loose unless you hate exhaust leaks, in which case i would tighten them.

 

incase you ever want to take them off for some reason, slap some nickel or copper antiseize on and crank em down

 

The reason I am asking, is because they came in the manifold and o2 housing really loose. I would have never asked had they came tightened, but they were half way out. Thanks so much. Now one more question isn't there a sensor in the o2 housing portion? If so, the bolt would have to be removed and the plug replace it?