Turbo Lag

[werner at tij.wb.xerox.com]

>>>>> "Bruno" == Bruno!  <u933234 at student.canberra.edu.au> writes:

    Bruno> Is there any reason for not using a blow-off valve in this
    Bruno> situation? ...

Most turbocharged cars on the market come with these by-pass valves.
They are designed to keep the turbo from stalling as it works against
the closed throttle.  They do not keep a minimum boost pressure.  In
fact, the boost will still drop off a fair amount, depending on how
fast you switch gears.

The advantage of the ALS is that even at part throttle, you have
massive boost "on-tap", without having to wait for the turbo to start
to spin up.  

[BTW: Turbo lag is really interesting with Cruise Control.  The cruise
tends to over compensate a lot, since there is not a linear relation
between throttle position and power output.  Still, I use it on most
of the TSD rallies I run.]

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