[Diy_efi] Timing Advance Curve?
Geddes, Brian J
brian.j.geddes at intel.com
Mon Dec 16 18:10:39 GMT 2002
Any other advice on this? If a dyno is not readily available (I have an =
all-wheel drive car), could one infer a increase in torque from a =
decrease in EGTs? =20
>=20
>=20
> The DIY way is to advance until torque drops, or until it pings,
> whichever is first. If it pings first, drop it back a notch, or use
> higher octane.
>=20
> If you are talking about a programmable chip, where you can set the
> numbers at each point, it works the same way, except the=20
> process has to
> be done for each set point. But a rule of thumb is, greater=20
> VE calls for
> less advance, but greater RPM calls for more advance. The=20
> torque curve
> of an engine at stock is a good starting place to guess at VE.
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