Originally Posted by Orb
For those who care.......
If you don't pin prick the hose with the ball bearing insert with the hose placed back on the tube stub you will induce a vacuum of 2-3 in of Hg from summer to winter temperatures. The positive pressure increase can be as high as 4-5 PSI (best guess) since the air will heat up a lot when the engine is running.
Acutally, i do care quite a bit, thanks orb for your insight.
Now, what does that mean in layman's terms?
And is there a loss in low-end power from this mod AT ALL? There seems a lack of "sure" knowledge on this point. i took it off and then re-attached it after 2 weeks or so. What's your take on this modification?