Open loop at WOT???

[xxalexx at ix.netcom.com]

> From:          "Gary Derian" <gderian at cybergate.net>
> To:            <diy_efi at efi332.eng.ohio-state.edu>
> Subject:       Re: Open loop at WOT???
> Date:          Mon, 3 Aug 1998 17:49:31 -0400
> Reply-to:      diy_efi at efi332.eng.ohio-state.edu

The rev limiter is a little scary, i thought i lost it a few times.
alex
> The V-12 Mercedes engine originally ran rich for max power at WOT.  It was
> recalibrated to remain in closed loop at WOT to reduce emissions.  The power
> was reduced from 406 hp to 389.  Top speed was still governed to 155 mph.
> 
> I think warranty considerations cause most OEMs to set the fuel rich at WOT.
> 
> Gary Derian <gderian at cybergate.net>
> 
> -----Original Message-----
> 
> 
> >Thanks for the response, Richard.  I suspected that that might be part of
> >it, but wasn't sure.  I guess the OEMs don't think their cooling systems
> are
> >up to the task at consistent WOT?  Or is it because detonation is more
> >likely at WOT?
> >
> >At any rate, thank you for the answer.
> >
> >GR
> >
> >> -----Original Message-----
> >> From: richard vandervoort [SMTP:fastski at mailexcite.com]
> >> Sent: Monday, August 03, 1998 2:06 PM
> >> To: diy_efi at efi332.eng.ohio-state.edu
> >> Cc: george.reiswig at intel.com
> >> Subject: Open loop at WOT???
> >>
> >> The OEMs purposely run rich at WOT because the engine
> >> runs cooler.  Emission are not regulated and there
> >> isn't any effect on MPG numbers since they do not use
> >> WOT during fuel economy testing, so there isn't any
> >> penalty for running rich.  Someone has probably already answered this,
> but
> >> I couldn't find it in the archive.
> >>
> >>
> >> Free web-based email, Forever, From anywhere!
> >> http://www.mailexcite.com
> 
> 
>