So i have a dealer installed boost gauge what is the boost patter and maximum boost. The gauge measures in mPA.

DG

 

I believe 14.5 is max boost.

 

is that PSI?

 

14.5psi = .1 mPA on the gauge.

 

Actually it's more like:

0.099999995 mpa

 

lol why'd they decide to measure boost in pascals?

 

http://www.sengpielaudio.com/calculatorPressure.htm

.1 megapascal = 14.5037626 pounds per square inch
so full boost is basically the .1 mark on your dial that reads in kPa. but boost gauges are only consistent at one thing... being consistently innacurate. so if it's close to .1 you're probably just fine.

 

great is there a boost pattern, i.e what rev range should maximum boost be produced?

 

Max boost begins to fall off as you get towards redline because of the increase in cylinder pressure. Subaru and basically any other car manufacturer has the same setup to drop boost off slowly to not risk a chance of too high a pressure. (ie. blown headgaskets, piston rings, or the wearing out of seals that much quicker) Max boost on my standard WRX comes at about 5700 rpm.

 

great thanx for the info