plug readings vs electronics

[Jörgen Karlsson]

What was the AFR fine for?
You did have detonation, as I see it something is wrong then. Either the to
aggressive ignition for the boost and mixture choosen.Or the boost for the
mixture and ignition choosen and soo on. On a turbo or supercharged car a
richer mixure is probably the best option.

If you had backed of the ignition a few degrees, would the EGT drop because
the engine wasn't detonating any more or would it increase?

EGT should make the EGT increase, but it is not a good way to determine if
the engine detonates. On a knock controlled car detonation will cause an
increase in EGT, at least if the engine management system retards the
ignition. But that is an other ballgame.

Jörgen


----- Original Message -----
From: "Jason Mauldin" <jmauld at yahoo.com>
To: <diy_efi at diy-efi.org>
Sent: Thursday, October 11, 2001 2:38 PM
Subject: Re: plug readings vs electronics


no it wasn't a lean mixture.  A/F ratio was fine.

--- Jorgen_Karlsson <jorgen.m.karlsson at home.se> wrote:
>
> ----- Original Message -----
> From: "Jason Mauldin" <jmauld at yahoo.com>
> To: <diy_efi at diy-efi.org>
> Sent: Thursday, October 11, 2001 7:19 AM
> Subject: Re: plug readings vs electronics
> <snip>
> > I've witnessed this firsthand.  I logged a
> knocksum of
> > about 20 and watched my EGT's climb.
> >



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