Tuning with EGT

[Bruce Plecan]

EGT's are about reaching the thermal limits of the engine.
No more, nor less.
You can change the EGTs by changing timing, and fuel, etc..

You monitor EGTs, not tune to a specific EGT, though folks often fall into
it worked for Mr ABC, so it is a Golden Rule.



----- Original Message -----
From: "Josh Pullen" <joshpullen at onebox.com>
To: <diy_efi at diy-efi.org>
Sent: Monday, March 05, 2001 1:56 PM
Subject: RE: Tuning with EGT


> EGT's can really only indicate that you may be running lean or not.
> But there are can be other causes for detonation than just a lean
condition.
>
> --
> Josh Pullen
> 1994 HKS T04R Supra Turbo
> http://jmpvm.dyndns.org
>
>
> ---- "Rich M" <rsrich at cwcom.net> wrote:
> > Hmmm, that's an interesting thought - can EGT be used in any way to
> > indicate
> > onset of detonation?
> > Rich
> >
> > > -----Original Message-----
> > > From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> > > Behalf Of Grant Crockett
> > > Sent: 05 March 2001 16:42
> > > To: diy_efi at diy-efi.org
> > > Subject: Tuning with EGT
> > >
> > >
> > > Has anybody done air-fuel mixture tuning with exhaust
> > > gas temp rather than O2 sensor?  I have read that the
> > > thermocouple has a much quicker reaction time to high
> > > heat/lean fuel conditions than an O2 sensor.
> > >
> > > If so, what are you getting for temperature readings?
> > > I am wondering what temps (deg F) would equate to
> > > optimum performance, without detonation.
> > >
> > > end
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