Typical ignition timing response to throttle snap?

[Espen Hilde]

> Date: Sun, 26 Sep 1999 00:49:35 EDT
> From: PHXSYS at aol.com
> Subject: Typical ignition timing  response to throttle snap?
> 
> HI everyone
> 
> I was wondering  what effect rapid throttle movement has on ignition
timing.
> 
I have heard that some systems uses timing retard under sudden accleration
in turbo applications.The turbo needs time to speed up to deliver whats
required, doing so, it makes a higher exhaust backpressure on the
engine,than under steady state. The engine is more prone to detonations,
because of more exhaust 
residuals /heat in the combustion chamber. One way to lover the detonation 
tendencies is to lover the timing.