Quote:
Originally Posted by Nessumsar
What is the pressure-regulator-thing on top of the valley cover? |
adjustable vacuum regulator.... my Weiss pump can pull some extreme vacuum (more than I want/need) so I can turn it up for a track event and turn it down for street. I'll likely run a safe setting 99% of the time. Not worth the few extra ponies IMO.
http://www.petersonfluidsys.com/engine_breath.html