boost hoses

JShadzi at JShadzi at
Sun Sep 23 23:12:24 EDT 2001

Yes, proportional, but hardly linear, flow decreases at boost/pressure rises 
(just like a fuel pump), and the misconception exists in that fact.  In my 
own car running a K26 (currently), the car is actually faster at 14psi then 
at 18psi- where the inefficient K26 begins heating the intake charge beyond 
the ability of the intercooler.


In a message dated 9/23/2001 6:10:45 PM Pacific Daylight Time, 
robert at writes:

<< However, Javad, all else being equal, flow will be more or less directly 
 proportional to pressure at the kind of pressure we experience in real 
 world situations.
 At 08:56 PM 9/23/01, JShadzi at wrote:
 >No, it does not have an effect, remember, it is flow that makes power, not
 >boost.  A little swelling of the hoses will not affect flow, and
 >realistically, will not reduce pressure either (theoretically it does, but
 >may not even be measurable within' reasonable tolerances).
 >A common mistake many make is thinking that boost (how many psi the turbo is
 >producing) makes power.  It is flow, or how much net _air at a certain
 >pressure_ is being fed into the combustion chamber.  Two turbos, a K24 and
 >K26 can be making 15psi for example, but the K26 will be flowing 
 >more air.  Of course, temp (turbo efficiency) plays into this, as do other
 >Pressure alone gives no indication to how much air is actually flowing into
 >the motor.  Anyway, end of rant  ;)
 > >>

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