View Single Post
Old Jun 22, 2005 | 12:45 PM
  #10  
GARETH T's Avatar
GARETH T
Professional Waffler
20 Year Member
 
Joined: May 2003
Posts: 30,980
Likes: 9
From: barry-south wales
Default

the PR scale is a ratio

so work it out like i first showed

so if you was running 20 psi boost it would be

20+14.7
----------- = Pr = 2.36 pr
14.7
Reply