Hi all
does anyone know at what engine temperature should warpum enrichment stop
affecting the mix?
I am using the canned map 141np002 as my starting point for my SERT, but notice even at 160 deg C it is affecting the air/fuel ratio by 2 increments.
Now I dont know what temp it should stop at, but had thought it to be much less than this.

When i check back to some data record runs i made with the original factory setup, i see it stops having an effect at 111 deg C. this seems a more realistic value, but all the canned maps seem to say otherwise.

can anyone shed some light on this?
I hope to load the map tonight and give it its first run with the se a/c and vance and hines slipons.

thanks.

 

It is always there for a little bit. When it is used at 160C it is being used to cool the motor. Think about how hot 160C is.

 

ok. thanks for the reply.
was just suprised to see the afr being influenced by 1 or 2 increments right throughout the range when i see a lot of people are going to a lot of trouble to get their afr charts spot on.
guess i'll see how it runs before doing anything anyway.

[IMG]local://upfiles/6605/CA1C65363DA949F1BDB622A6277741AF.jpg[/IMG]

 

It´s time-based.

When the ignition is first turned on the ECM checks engine temperature one time to determine where in the Warmup Enrichment Table it should start.
When the engine is started the Warmup Enrichment affect “decays”, or diminishes over a set period of time until it reaches zero, or no effect.
The “Decay Time” is time-based, not “table-based”.

Don´t know the time though. But you can check with with the SERT datamode if its zero.

/Dan B

 

cool. ta. thats deffo interesting enough to check on the datamode.
will check it in a couple of weeks after return from holidays, and will post what it does.

 

or in day or 2 if get chance to do data run before holidays.