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Buggy Air temp timing retard feature?

Posted: Thu Aug 24, 2006 4:51 pm
by smracing
I was messing with the air temp timing retard feature today and have a problem or question.

I setup my columns 120, 140, 161, 171, 199. I zeroed all of the columns. Car drives fine. I put -2.00 degrees in at 140deg and left all of the rest at zero. The car pulls so much timing at 35-100% throttle that timing goes to -4 degrees and you can hear the exhaust get obnoxiously loud. I see it pulling this timing by looking at the display when I hit the gas. If I zero the timing out car goes back to running fine.

I will try and get a datalog tonight. I am tuning a simple D16Z6 that is waiting for a turbo. Just wanted to test this feature.

My air temps run around 100-130 on a hot day.

I am assuming the program interpolates between temperature ranges in the boxes.

Posted: Fri Aug 25, 2006 10:03 am
by Hondata
Do not change the first temperature value from the default value. eg use -40, 120, 140, 170, 200 I'll change SManager to prevent this for the next release. Interpolation is used, so if your ignition changes with temperature are linear you don't need that many values.

Posted: Fri Aug 25, 2006 7:26 pm
by smracing
I changed the water temp compensation values as well, will that cause a problem.

Posted: Fri Aug 25, 2006 8:05 pm
by Hondata
Until the next release, do not change the first temperature value on the IAT and ECT ignition comp high than the lower ambient temperature.

Posted: Sat Aug 26, 2006 7:11 pm
by smracing
Changing the values back seems to have solved any issue with the IAT.