[BiturboS4] altitude and boost (was ice racing)
matt_20v at yahoo.com
Mon Feb 3 17:04:44 EST 2003
> Keep in mind, though, that not all Californians are
> limited to sunshine and
> dry pavement. Many of us here in San Francisco drive
> 3 hours away to Lake
> Tahoe in the Sierra Nevadas for some
> skiing/snowboarding on the weekends - so
> we get a bit of snow driving :).
Some fun for sure the last couple weeks of December.
But since then, nada.
> 6,500 feet, the idling vacuum is different....and
> the boost is summoned much
> sooner! Anyone else live at altitude? How does
> this affect chipped turbos?
> More wear?
There should be an altitude sensor that causes the
ECU to reduce boost to prevent turbo over-spin.
I suspect the earlier boost you see is not controlled
directly, but rather is because the throttle input
requested can't be met without pressurizing the thin
San Jose, CA
'91cq- 20Vt; retired to coastal driving & track days
'00S4- 30Vtt; Tahoe ski car
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