WRX vs. 1.8t

[jdbubb@ix.netcom.com (Dan Bubb)]

The early 1.8T's didn't actually measure and control boost pressure.
They measured mass air flow and adjusted boost pressure to control that.
I don't know if the later 1.8T's control boost the same way or measure
and control boost directly.
The net upshot is that at higher altitudes the VW engine will run higher
boost to attain the same mass air flow the engine would have at sea
level. So, power declines at altitude (mostly due to turbo inefficiency
at higher pressure ratios), but not much. If the Subaru directly
controls boost then it will loose more power than the VW at altitude.
Maybe that explains it. Or maybe the Suby driver was lost in turbo lag?
Dan

-------- Original Message --------
Subject: WRX vs. 1.8t
   Date: Thu, 24 Oct 2002 12:59:12 -0600
   From: "Brandon Smith" <SCIROCCO_SPEED@msn.com>
     To: "SCIROCCO-LIST" <scirocco-l@scirocco.org>

 Okay to make myself clear, here in tha Mountains of Colorado (well not
really, but still over 6,200 ft above sea level...like the base of Pikes
Peak) its just been my experience that the 1.8ts are faster than the
WRX....why??? assuming because of the turbo lag of the WRX.   Up here
the 1.8t pulls harder.  guess maybe VW had visions of their european
customers driving around in the Alps a lot.? but for some reason, a
150hp 1.8t in a VW seems to pull harder in the first few gears than a
180hp Audi ???-Brando

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