Originally Posted by
spfautsch
Anyone have an idea how the 12bf1 EOIT ramp out multiplier works? ,
From what I gather from experiments it is some kind of factor for graduate change of values. For example if you command a change from $20 to $40 it will slow down the change to by $01 each second. so the transition will takes place 40 seconds. That is only example. I haven`t test the actual rate with $10, nor I know in which direction the increase of it will take place, slowing or speeding the change.
There is 1 way to test it. Monitor the eside word_a9 while changing the EOIT target from end to end on the controller window with ignition on.
To do it open raw window in eehack, and loop in 50ms interval the command e4 ... 03 00 a9 00 aa , you will get a response with the word_a9.
Check how much it takes for the change. Than flash a bin with new 12b1f value, for example $20 and do the same test. Compare the results if it takes more or less time for the change to occur.
On ybody calibrations the timers for closed loop operations are set much lower. You can try increasing them if the engine doesn`t warm up fast enough.
At startup I found the it warms up best at pig rich condition o2 above 900mv, when running close to stoich at warm up, it run rough and you can feel some misses from time to time. I also played with idle spark and make a curve to change the spark during warm up.
I end up with that spark coolant temp corr table.
Code:
5.0 5.0 5.0 6.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0
5.0 5.0 5.0 6.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0
4.0 4.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0
0.0 -11.0 -11.0 -11.0 -11.0 -11.0 -11.0 -2.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0
0.0 -8.0 -8.0 -8.0 -8.0 -8.0 -8.0 -2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0
0.0 -6.0 -6.0 -6.0 -6.0 -6.0 -6.0 -2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0
0.0 -3.0 -3.0 -3.0 -3.0 -3.0 -3.0 -3.0 -3.0 0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 -2.0 -2.0 -2.0 -6.0 -6.0 -6.0 -6.0 -6.0 -6.0 -6.0 -6.0
0.0 0.0 0.0 0.0 -8.0 -8.0 -12.0 -12.0 -12.0 -12.0 -12.0 -12.0 -12.0 -12.0 -12.0
0.0 0.0 0.0 0.0 -8.0 -8.0 -12.0 -12.0 -12.0 -12.0 -12.0 -12.0 -12.0 -12.0 -12.0
If you change that table beware that some xdfs can`t handle negative correction and zeroes the value when negative. I think I fixed it on the last xdf i posted here.
I plan to get the hotter thermostat also. Do you know a cross reference number for a Stant one.
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