Plug up air box
 

Hello all rx7 masters, I just remove little flapper and tape up the 2 holes. My question is can I plug up all the holes on the bottom of the air box? And what can I use to plug the 2 vacuum line on the passenger side of the air box that on the engine itself. The rest i use tape and plug. Thanks for any inputs.....

I did. I took the whole thing off, cut the tubes with a hack saw, filled them with jb weld on the top and tape on the bottom. When it cured I took the tape off. I haven't had any problems yet, but just wait... If I was wrong to do that, someone will be here to verbally abuse me for it. (and hopefully with good reason)

-Jake

Also if your talking about the vacuum line on the intake manifold. JB weld and a screw to fit.

I tape off all the holes on the air box. Then plug all the line back in. What if 1 of these foil tape get into an engine, will that cause any damage?

Possibly? The vacuum plugs alone should be enough to hold if they are the right size. I took the air box off the car and let the JB weld cure overnight, then remove the tape, which is just keeping the JB weld in place. But like I said before, wait for a good response, not just me being bored and posting what I have done.