Manifold Temp Calculation

[raflyer]

Hello,
How is HPtuners calculating Manifold Temp in latest version of the scanner. I know its not a sensor as my car does not have an intake manifold Temp sensor.
Thanks,
Rob

2014 Cadillac ATS LTG 2.0 Turbo A6

[djyankees31]

I would like to know this too for Gen V Corvettes.

Thanks

[raflyer]

Guess i'll open a ticket with support. Thought they monitored the forums as well.

[07GTS]

MAT is usually the bias between the IAT and ECT sensors, cylinder charge temp bias determines the temp readout all zero's makes it same as IAT and all 1 makes it same as ECT

[raflyer]

MAT is usually the bias between the IAT and ECT sensors, cylinder charge temp bias determines the temp readout all zero's makes it same as IAT and all 1 makes it same as ECT

Well my IAT2 drops when under a WOT pass and coolant temp stays the same but manifold temp shoots up by 30-40deg So they must be calculating from somewhere else?

[07GTS]

not sure then im use to the LS style, u can just unplug some sensors IAT and ECT see if it directly changes the MAT reading, if it dosnt change at all then not sure where its getting a calc from

[Ben C]

Keep in mind hp tuners aren't calculating anything, they are reporting what the factory ecu is calculating. Your question should be directed to the gm engineers that coded the ecu.