Ignition map question

Barry_D · Post by **Barry_D** » Sun Feb 20, 2005 9:38 pm

Hi all,

I've been reading a lot today and setting up my ignition map when I came accross this on a UK web site. This is what someone said about an ignition map for the MJLJ:

"Once it's started a good trick to get a really good idle is to give some extra advance above and below your desired idle point -if you're idling at 1000rpm then run say 14 degrees at 500 rpm, 12 at 1000rpm and 14 at 1500rpm. What this does is give the engine a little boost if the idle drops below 1000rpm, compensating for any temperature changes."

Thoughts anyone?

Barry

Todd Charles · Post by **Todd Charles** » Mon Feb 21, 2005 12:46 am

While watching a timing light on several newer injected cars this seems to be what is happening with them. I beleive it should work well in most applications.

Todd

cng1 · Post by **cng1** » Mon Feb 21, 2005 4:50 pm

The other thing you can do is to narrow the rpm sites around idle, to give you more fine grained control in this important area.

Autosport Labs

Ignition map question

Ignition map question

While watching a timing light

Those would be my words :-)