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SVTPerformance's Chain of Restaurants
Tuning À la carte
Some weird PIDs?
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<blockquote data-quote="Dinosgt" data-source="post: 15198773" data-attributes="member: 169099"><p>Many thanks - I have asked a half dozen people what some of these meant, and you are the first to offer up some answers. THANKS!</p><p></p><p><strong>Maf is just the airmass flow from the maf sensor</strong></p><p></p><p><em>What values make sense? Am I looking for a pattern or absolute values? The numbers seem to range from 1 to 80.5 and follow rpm closely in steps</em></p><p></p><p><strong>Load is fords VE</strong></p><p></p><p><em>What is "VE"?</em></p><p></p><p><strong>Tq source is a bitmask flag for the currently active tq limiting routine</strong></p><p></p><p><em>Does this mean something like a traction control to limit torque? My values range from 0 to 13, but goes highest when the throttle is off and rpm low, returning to zero under full throttle.</em></p><p></p><p><strong>Maf hertz is the actual maf frequency being read from the maf sensor, thats the 2nd most important variable in a mass air ecu only second to the crank trigger</strong></p><p></p><p><em>What anomalies do I look for there? I read between 8 and 10 under WOT </em></p><p></p><p><strong>Ltff is KAMRF known as the long term</strong> fuel trim</p><p></p><p><em></em></p><p><em>Should I be looking for a constant value of 1? I see it ranges of .99 to 1.04, but usually around 1 under full throttle</em></p><p></p><p><strong>Stft is LAMBSE known as the short term fuel trim</strong></p><p></p><p><em>How is this different than long term trim?</em></p><p></p><p></p><p><strong>Frp is probably fuel rail pressure delta and actual</strong></p><p></p><p><em>these values move between 45-50 under WOT, then spike to 70 once the throttle is released</em></p><p></p><p><strong>tq dd could be throttle or the currently active torque limit</strong></p><p></p><p><em>these are usually at zero, spike to 9 and stays there under WOT</em></p><p></p><p><em>Thanks again - I am sorry for such newbie questions, but I want to understand this stuff before I attempt to load a tune, so I can see what changes and its effect. </em></p></blockquote><p></p>
[QUOTE="Dinosgt, post: 15198773, member: 169099"] Many thanks - I have asked a half dozen people what some of these meant, and you are the first to offer up some answers. THANKS! [B]Maf is just the airmass flow from the maf sensor[/B] [I]What values make sense? Am I looking for a pattern or absolute values? The numbers seem to range from 1 to 80.5 and follow rpm closely in steps[/I] [B]Load is fords VE[/B] [I]What is "VE"?[/I] [B]Tq source is a bitmask flag for the currently active tq limiting routine[/B] [I]Does this mean something like a traction control to limit torque? My values range from 0 to 13, but goes highest when the throttle is off and rpm low, returning to zero under full throttle.[/I] [B]Maf hertz is the actual maf frequency being read from the maf sensor, thats the 2nd most important variable in a mass air ecu only second to the crank trigger[/B] [I]What anomalies do I look for there? I read between 8 and 10 under WOT [/I] [B]Ltff is KAMRF known as the long term[/B] fuel trim [I] Should I be looking for a constant value of 1? I see it ranges of .99 to 1.04, but usually around 1 under full throttle[/I] [B]Stft is LAMBSE known as the short term fuel trim[/B] [I]How is this different than long term trim?[/I] [B]Frp is probably fuel rail pressure delta and actual[/B] [I]these values move between 45-50 under WOT, then spike to 70 once the throttle is released[/I] [B]tq dd could be throttle or the currently active torque limit[/B] [I]these are usually at zero, spike to 9 and stays there under WOT[/I] [I]Thanks again - I am sorry for such newbie questions, but I want to understand this stuff before I attempt to load a tune, so I can see what changes and its effect. [/I] [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
Some weird PIDs?
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