PAIR system question

[steves]

I was researching the removal of the pair system, and I'm trying to understand what the bad effects are of not capping the holes?

The only reason I ask, is that I also have a 96 kat with a B6 donor motor, and I know it has those ports, it just hasn't really caused anything bad to happen (that I've noticed).

[jeepskate99]

Let's just call it an exhaust leak.  If you have those ports on an engine open with no problems they aren't "those ports".