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Hi,

I am running the OSE 12P bin and have a question about the idle timing Map. In my logs I noticed that no matter what RPM or MAP, if TPS = 0% the computer runs the idle timing and anything above 0% TPS it will run the normal MAP. I thought it would only use the Idle timing when it was in closed loop idle? Have I got a setting wrong??

Thanks for your help,

Regards,

RJC078

Do you have a speed sensor?

No speed sensor

Idle spark is used once the engine is idling - closed throttle and vehicle speed is less than "Idle Fuel Param - Max road speed for idle A/F ratio". You will find it a little harder to get all the idle stuff working well without a speed sensor though, as you have found as soon as throttle is closed you will use idle spark as it thinks the vehicle is stationary.

something i also found out about since putting the different cam in my motor is that my idle spark should be 28 degrees .... i was seeing 33 degrees at idle (closed loop idle) and this is because closed loop idles main aim is to keep the engine rpm at the "desired idle" figure and to do this is adds and removes timing to keep the idle at the desire .... like if you have your carby car idling and you adjust the dizzy the revs rise and drop .....

you can turn it off, there is a scaler for it, but i've found it generally works better with it than without it.

Thanks guys. I adjusted the "Idle Fuel Param - Max road speed for idle A/F ratio" to 0 KPH and have just adjusted the main map to what I want the idle timing to be and it seem to work OK and not go into the idle map. I was also seing the difference in the idle timing when it was being used and wondered why this was, so thanks for that as well!