I went through the calculations using your eq = code eq and got the following for a BATFAC = 12 (1.2 ms) and InjOpen = 10 (1.0 ms):
---------BATT ---------PW open
-------72(7.2V)-------22(2.2 ms)
------100(10V)-------17(1.7 ms)
------120(12V)-------13(1.3 ms)
------130(13V)-------11(1.1 ms)
------132(13.2V)-----10(1.0 ms)
These look reasonable to me. What are you getting for these in MT ? If the MT values are different, I will check tonight.
Battery Correction Voltage, dwell and injector open time
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
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MT gets its pulsewidth direct from MS II and shouldn't be changing this, other than to correct for msx10 integer to ms decimal units. And PWopen is added directly to the PW, so if you run at say 10V without correction, vs running with correction, the PW should change by .7 ms. I will check this tonight.
I tried a run with default batfac(.2ms/V) and a battery voltage of 10 V. I got a PW of 14.5 in MT. I changed battfac to 0 and got a PW of 13.8, a drop of .7 ms, which is exactly what it should be.
In looking at your numbers, I think I see what the problem may be. The batfac in MT when using the default data is .2 ms/V, because that is more meaningful physically, but the default batfac in the code that produces that is 12 msx10 or 1.2 ms. If you factor BatFac and re-write the eq. as follows, you will see what is going on:
PWopen = InjOpen + BatFac *(132 - BAT) / 60
So, what is shown in MT is really BatFac/60 = 12/60 = .2 ms/V.
In looking at your numbers, I think I see what the problem may be. The batfac in MT when using the default data is .2 ms/V, because that is more meaningful physically, but the default batfac in the code that produces that is 12 msx10 or 1.2 ms. If you factor BatFac and re-write the eq. as follows, you will see what is going on:
PWopen = InjOpen + BatFac *(132 - BAT) / 60
So, what is shown in MT is really BatFac/60 = 12/60 = .2 ms/V.