Low ignition timing at idle 25DET NEO

[niZmO_Man]

Wow I didn't know the 1980's ECU were so complicated.

[Dose Pipe Sutututu]

I have given up, clearly I know nothing.

[RICE RACING]

ECU words from the master, pay attention !

 

 

 

[admS15]

Youz dont know sshhiiittt. Roger knows best.

[Slap]

Youz dont know sshhiiittt. Roger knows best.

Whos roger?

[Slap]

The argument was about if the ecu could add timing during idle and if thats what he was seeing.

[Ben C34]

4 minutes ago, Slap said:

The argument was about if the ecu could add timing during idle and if thats what he was seeing.

What argument?

[admS15]

Wut

[Slap]

I will now quote myself.
And thus, yes it is idling.  It is not running on the main maps.
And the original argument was whether the ECU added 15° to a static 15° for a total advance of 30°BTDC, which is not the same thing as the ECU using delta control to manipulate the idle speed.

This

[Slap]

Sounds like the reading is actually the Timming added by the ecu. Wich would suggest to much manual advance on the cas.
I believe the ecu normaly adds 10 -15 at idle so it stays at about 30 on idle.... according to my rb25 experiences.

A slight rough idle can happen from an exhaust leak prior exhaust o2 sensor.
The standard ecu on an rb always hunts for the best spot. The more air tight and fresh your plant the less noticeable the hunting.

I would try retarding the car 5-12

When i said this

[GTSBoy]

Yes, but

[spudtatoe]

Got it all sorted.. shop over here verified the base timing then set cam timing, also lowered the idle so now it's at 650rpm with no issues. Gives me peace of mind.