psi stands for?

what is 15 psi stands for?

pressure - pounds per square inch - usually used to measure boost.

pressure per square inch - usually used to measure boost.


I thought it was POUNDS per square inch.

Thus the slang "Oh, he's running 15 pounds of boost."

million thanks for the input guys!

uh... that was a slip :disappoin pounds per square inch....

if pounds it will be lbs./si

Gee back in to school days anyway seen my mr2 log on to wwww.jerklhyderacing.com/weight.htm then click to the picture then bruce lee all mighty will see my car on the background at lease were getting there. and the movie called ENvy, Duplex,etc Mr2 Rules!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!