PWM voltage comp dialog box quirk

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142 guy
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PWM voltage comp dialog box quirk

Post by 142 guy »

I don't know whether this is a Tuner Studio Issue or an MS2Extra issue; but, I am thinking its probably a Tuner Studio quirk so I am starting here. I am running version 2.6.19.

My PWM valve has a voltage sensitivity of 6% per volt. In the dialog box for the compensation curve I enter a base of 0% compensation at 13.3 volts, 6% at 12.3, -6% at 14.3, -12% at 15.3V and on using a flat line. I enter the data using a straight 6% slope over the range, close the box and then reopen it and the values have changed - slightly. The 14.3 V value changes to -5.9% and the 15.3 V value changes to 12.2% so I no longer have a straight line compensation. I get similar changes on the voltage values below 13.3 V. The 0% entry never changes. The changes are not huge, I just don't understand what is going on.

I have re-entered the correct data , closed and reopened the dialog box and the same thing happens. I have done this perhaps 5 times - same thing. I tried the shut down and restart - no effect.
jsmcortina
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Re: PWM voltage comp dialog box quirk

Post by jsmcortina »

That's due to the 0.39 step size of that data. It is defined by the firmware devs in the "ini" file.

James
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142 guy
Helpful MS/Extra'er
Posts: 58
Joined: Thu Oct 22, 2015 9:05 am

Re: PWM voltage comp dialog box quirk

Post by 142 guy »

Thanks
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