Boost

[Phil Martin]

The best way to reduce lag is to use rally car anti-lag which involves using
an air bypass valve to let air around the throttle butterfly, retard the
timing heavily and inject lots of fuel.
This has the effect of large backfires which spin the turbo even at very low
rpm when off the throttle.

Phillip Martin

----- Original Message -----
From: "Bob Wooten" <r71chevy at earthlink.net>
To: <gmecm at diy-efi.org>
Sent: Sunday, December 03, 2000 7:11 AM
Subject: Re: Boost


> which is kind of my point.  sounds to me like this is something that is
> mostly for a stick in either street or Auto X (or F1 or somewhere else
that
> they use turbos) applications where this is an issue & i would think not
> for Drag @ all.
>
> thanks for the info gents, as usual very insightful.
>
> BW
>
>
> > [Original Message]
> > From: Bruce Plecan <nacelp at bright.net>
> > To: <gmecm at diy-efi.org>
> > Date: 12/2/00 8:23:07 PM
> > Subject: Re: Boost
> >
> > Engine still changes rpm.
> > At 100,000 rpm it doesn't change speed as fast as the engine.
> > I power shift the GN all the time (It's an auto)
> > Bruce
> >
> > > do you mean that w/no backpressure the turbo is spooling even though
the
> > > throttle is closed?  & then when the trottle is hammered back on & the
> > > clutch let out that it is still spooled up?  does no-one that drives a
> > > turbo power shift?
> > >
> > > BW
> > >
> > >
> > > > [Original Message]
> > > > From: Jeremy Gonyou <jgonyou at hotmail.com>
> > > > To: <gmecm at diy-efi.org>
> > > > Date: 12/2/00 2:44:43 PM
> > > > Subject: Re: Boost
> > > >
> > > >
> > > > >A blow off valve is to bleed air from the compressor spike when you
> > slam
> > > > >the throttle body shut. It's supposed to stop you from damaging
your
> > > turbo.
> > > > >However, in talking with people who build turbos and have been in
the
> > > > >industry for a very long time, it's their feelings that the blow
off
> > > valves
> > > > >available to people like us don't really serve that purpose because
> > they
> > > > >react too slow.
> > > >
> > > > I think that the real reason people want them is for the improved
> > > throttle
> > > > response between shifts.  The idea is that with a blow off valve
your
> > > turbo
> > > > is free to spool with the throttle closed and you have your boost
> > > availabe
> > > > when you let out the clutch.  Kinda like toyota's cool bang-bang
> system
> > :)
> > > >
> > > > Jeremy
> > > >
> > >
> >
>
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> > >
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> > >
> > >
> > >
> > > --- Bob Wooten
> > > --- r71chevy at earthlink.net
> > > --- 71-91 Camaro
> > >
> > >
> > >
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>
> --- Bob Wooten
> --- r71chevy at earthlink.net
> --- 71-91 Camaro
>
>
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