Re: Turbo question

[quk@sievers.com (Phil Payne)]

In message <Pine.A32.3.91.970514081816.504228B-100000@elk.uvm.edu> "Louis A. Mulieri" writes:

> I have a question about boost.  I think bar is a unit of measure and is 
> equal to one atmosphere.  If this is true does that mean that 0.4 bar 
> would be a vacuum at sea level where you would have one atmosphere or do 
> I have some thing wrong. 

Audi changed the way they refer to boost pressure.  In early documentation, 
they use relative pressure - 0.4 bar is actually 1.4 bar absolute.
 
Later on they adopted absolute pressures.

You'll see both systems used interchangeably on the list, depending on
the age of the car and what the owner is used to using.

--
 Phil Payne
 phil@sievers.com
 Committee Member, UK Audi [ur-]quattro Owners Club